Hindu calendar

Calendars used by Hindus worldwide

A page from the Hindu calendar 1871-72

The Hindu calendar, also called Panchanga (Sanskrit: पञ्चाङ्ग), is one of various lunisolar calendars that are traditionally used in the Indian subcontinent and Southeast Asia, with further regional variations for social and Hindu religious purposes. They adopt a similar underlying concept for timekeeping based on sidereal year for solar cycle and adjustment of lunar cycles in every three years, but differ in their relative emphasis to moon cycle or the sun cycle and the names of months and when they consider the New Year to start.[1] Of the various regional calendars, the most studied and known Hindu calendars are the Shalivahana Shaka (Based on the King Shalivahana, also the Indian national calendar) found in the Deccan region of Southern India and the Vikram Samvat (Bikrami) found in Nepal and the North and Central regions of India – both of which emphasize the lunar cycle. Their new year starts in spring. In regions such as Tamil Nadu and Kerala, the solar cycle is emphasized and this is called the Tamil calendar (though Tamil Calendar uses month names like in Hindu Calendar) and Malayalam calendar and these have origins in the second half of the 1st millennium CE.[1][2] A Hindu calendar is sometimes referred to as Panchangam (पञ्चाङ्गम्), which is also known as Panjika in Eastern India.[3]

The ancient Hindu calendar conceptual design is also found in the Hebrew calendar, the Chinese calendar, and the Babylonian calendar, but different from the Gregorian calendar.[4] Unlike the Gregorian calendar which adds additional days to the month to adjust for the mismatch between twelve lunar cycles (354 lunar days)[5] and approximately 365 solar days, the Hindu calendar maintains the integrity of the lunar month, but inserts an extra full month, once every 32–33 months, to ensure that the festivals and crop-related rituals fall in the appropriate season.[2][4]

The Hindu calendars have been in use in the Indian subcontinent since Vedic times, and remain in use by the Hindus all over the world, particularly to set Hindu festival dates. Early Buddhist communities of India adopted the ancient Vedic calendar, later Vikrami calendar and then local Buddhist calendars. Buddhist festivals continue to be scheduled according to a lunar system.[6] The Buddhist calendar and the traditional lunisolar calendars of Cambodia, Laos, Myanmar, Sri Lanka and Thailand are also based on an older version of the Hindu calendar. Similarly, the ancient Jain traditions have followed the same lunisolar system as the Hindu calendar for festivals, texts and inscriptions. However, the Buddhist and Jain timekeeping systems have attempted to use the Buddha and the Mahavira's lifetimes as their reference points.[7][8][9]

The Hindu calendar is also important to the practice of Hindu astrology and zodiac system. It is also employed for observing the auspicious days of deities and occasions of fasting, such as Ekadashi.[10]

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> Time keeping

> [The current year] minus one,
>  multiplied by twelve,
>  multiplied by two,
>  added to the elapsed [half months of current year],
>  increased by two for every sixty [in the sun],
>  is the quantity of half-months (syzygies).

— Rigveda Jyotisha-vedanga 4
Translator: Kim Plofker[11]

The Vedic culture developed a sophisticated time keeping methodology and calendars for Vedic rituals,[12] and timekeeping as well as the nature of solar and Moon movements are mentioned in Vedic texts.[13] For example, Kaushitaki Brahmana chapter 19.3 mentions the shift in the relative location of the Sun towards north for 6 months, and south for 6 months.[14][15]

Time keeping was important to Vedic rituals, and Jyotisha was the Vedic era field of tracking and predicting the movements of astronomical bodies in order to keep time, in order to fix the day and time of these rituals.[16][17][18] This study is one of the six ancient Vedangas, or ancillary science connected with the Vedas – the scriptures of Vedic Sanatan Sanskriti.[16][17]

Yukio Ohashi states that this Vedanga field developed from actual astronomical studies in ancient Vedic Period.[19][20] The texts of Vedic Jyotisha sciences were translated into the Chinese language in the 2nd and 3rd centuries CE, and the Rigvedic passages on astronomy are found in the works of Zhu Jiangyan and Zhi Qian.[21] According to Subhash Kak, the beginning of the Hindu calendar was much earlier. He cites Greek historians describing Maurya kings referring to a calendar which originated in 6676 BCE known as Saptarsi calendar.[22]

The Vikrami calendar is named after king Vikramaditya and starts in 57 BCE.[23]

## Texts

[edit]

Hindu scholars kept precise time by observing and calculating the cycles of Surya (the Sun), Moon and the planets. These calculations about the Sun appear in various astronomical texts in Sanskrit, such as the 5th-century Aryabhatiya by Aryabhata, the 6th-century Romaka by Latadeva and Panca Siddhantika by Varahamihira, the 7th-century Khandakhadyaka by Brahmagupta and the 8th-century Sisyadhivrddida by Lalla.[24] These texts present Surya and various planets and estimate the characteristics of the respective planetary motion.[24] Other texts such as Surya Siddhanta dated to have been completed sometime between the 5th century and 10th century present their chapters on various deified planets with stories behind them.[24]

The manuscripts of these texts exist in slightly different versions. They present Surya, planet-based calculations and Surya's relative motion to Earth. These vary in their data, suggesting that the text were open and revised over their lives.[25][26][27] For example, the 1st millennium CE Hindu scholars calculated the sidereal length of a year as follows, from their astronomical studies, with slightly different results:[28]

Hindu text | Estimated length of the sidereal year[28]

|

Surya Siddhanta | 365 days, 6 hours, 12 minutes, 36.56 seconds
Paulica Siddhanta | 365 days, 6 hours, 12 minutes, 36 seconds
Paracara Siddhanta | 365 days, 6 hours, 12 minutes, 31.50 seconds
Arya Siddhanta | 365 days, 6 hours, 12 minutes, 30.84 seconds
Laghu Arya Siddhanta | 365 days, 6 hours, 12 minutes, 30 seconds
Siddhanta Shiromani | 365 days, 6 hours, 12 minutes, 9 seconds

The Hindu texts used the lunar cycle for setting months and days, but the solar cycle to set the complete year. This system is similar to the Jewish and Babylonian ancient calendars, creating the same challenge of accounting for the mismatch between the nearly 354 lunar days in twelve months, versus over 365 solar days in a year.[4][29] They tracked the solar year by observing the entrance and departure of Surya (sun, at sunrise and sunset) in the constellation formed by stars in the sky, which they divided into 12 intervals of 30 degrees each.[30] Like other ancient human cultures, Hindus innovated a number of systems of which intercalary months became most used, that is adding another month every 32.5 months on average.[29] As their calendar keeping and astronomical observations became more sophisticated, the Hindu calendar became more sophisticated with complex rules and greater accuracy.[29][31][30]

According to Scott Montgomery, the Siddhanta tradition at the foundation of Hindu calendars predate the Christian era, once had 18 texts of which only 5 have survived into the modern era.[29] These texts provide specific information and formulae on motions of Sun, Moon and planets, to predict their future relative positions, equinoxes, rise and set, with corrections for prograde, retrograde motions, as well as parallax. These ancient scholars attempted to calculate their time to the accuracy of a truti (29.63 microseconds). In their pursuit of accurate tracking of relative movements of celestial bodies for their calendar, they had computed the mean diameter of the Earth, which was very close to the actual 12,742 km (7,918 mi).[29][30]

Hindu calendars were refined during the Gupta era astronomy by Āryabhaṭa and Varāhamihira in the 5th to 6th century. These, in turn, were based in the astronomical tradition of Vedāṅga Jyotiṣa, which in the preceding centuries had been standardised in a number of (non-extant) works known as Sūrya Siddhānta. Regional diversification took place in the medieval period. The astronomical foundations were further developed in the medieval period, notably by Bhāskara II (12th century).[citation needed]

### Astrology

[edit]

Later, the term Jyotisha evolved to include Hindu astrology. The astrological application of the Hindu calendar was a field that likely developed in the centuries after the arrival of Greek astrology with Alexander the Great,[20][32][33] because their zodiac signs are nearly identical.[17][34]

The ancient Hindu texts on Jyotisha only discuss timekeeping, and never mention astrology or prophecy.[35] These ancient texts predominantly cover astronomy, but at a rudimentary level.[18] Later medieval era texts such as the Yavana-jataka and the Siddhanta texts are more astrology-related.[36]

### Balinese Hindu calendar

[edit]

Hinduism and Buddhism were the prominent religions of southeast Asia in the 1st millennium CE, prior to the Islamic conquest that started in the 14th century. The Hindus prevailed in Bali, Indonesia, and they have two types of Hindu calendar. One is a 210-day based Pawukon calendar which likely is a pre-Hindu system, and another is similar to lunisolar calendar system found in South India and it is called the Balinese saka calendar which uses Hindu methodology.[37] The names of month and festivals of Balinese Hindus, for the most part, are different, though the significance and legends have some overlap.[37]

## Astronomical basis

[edit]

Main article: Astronomical basis of the Hindu calendar

The Hindu calendar is based on a geocentric model of the Solar System. A large part of this calendar is defined based on the movement of the Sun and the Moon around the Earth (saura māna and cāndra māna respectively). Furthermore, it includes synodic, sidereal, and tropical elements. Many variants of the Hindu calendar have been created by including and excluding these elements (solar, lunar, lunisolar etc.) and are in use in different parts of India.

Elements of the Hindu calendar  | synodic elements | sidereal elements | tropical elements

|
|
|

saura māna |  | rāśi, sauramāsa, varṣa | uttarāyaṇa, dakṣiṇāyana, devayāna, pitṛyāṇa, ṛtu
cāndra māna | tithi, pakṣa, candramāsa, varṣa |  |
nākṣatra māna |  | dina, ghaṭikā (aka nāḍī), vighaṭikā (aka vināḍī), prāṇa (aka asu)  |
sāvana māna | dina |  |

## Year: Samvat

[edit]

Samvat refers to era of the several Hindu calendar systems in Nepal and India, in a similar manner to the Christian era. There are several samvat found in historic Buddhist, Hindu and Jain texts and epigraphy, of which three are most significant: Vikrama era, Old Shaka era and Shaka era of 78 CE.[38]

The Hindu calendar saka samvat system is found in Indonesian inscriptions, such as the Kedukan Bukit inscription (pictured above) dated to 604 Śaka, which is equivalent to 682 CE.[39][40]

* Vikram Samvat (Bikram Sambat): A northern Indian almanac which started in 57 BCE, and is also called the Vikrama Era. It is related to the Bikrami calendar, and is apocryphally linked to Vikramaditya. The year starts from the month of Baishakh / Vaishakha. This system is common in epigraphic evidence from northern, western, central and eastern Indian subcontinent, particularly after the early centuries of the 1st millennium CE.[38]
* Shaka Samvat: There are two Shaka era systems in scholarly use, one is called Old Shaka Era, whose epoch is uncertain, probably sometime in the 1st millennium BCE because ancient Buddhist, Jain and Hindu inscriptions and texts use it. However, the starting point of Old Shaka Era is a subject of dispute among scholars. The second system is called Saka Era of 78 AD, or simply Saka Era, a system that is common in epigraphic evidence from southern India.[38]
* Saka era of Southeast Asia: The Hindu calendar system in Indonesia is attributed to the legend of Hindus arriving with a sage Aji Saka in 1st-century Java, in March 78 CE.[41][42] Numerous ancient and medieval era texts and inscriptions found in Indonesian islands use this reference year.[43][44] In mainland southeast Asia, the earliest verifiable use of Hindu Saka methodology in inscriptions is marked Saka 533 in Ankor Borei, which corresponds to 611 CE, while the Kedukan Bukit inscription in Sumatra, containing three dates in Saka 604 (682 CE), is the earliest known use of the Shaka era in the Indonesian islands.[44] However, these inscriptions only set the floruit for the use of the Shaka era in these places, and the Hindu calendar likely existed in southeast Asia before these dates to be used in important monuments. Further, the Hindu calendar system remained popular among the Hindus through to the 15th century, and thereafter in Bali.[44]
* Indian national calendar (modern): combines many Hindu calendars into one official standardized one, but old ones remain in use.[45]

## Months

[edit]

### Solar month and seasons

[edit]

See also: Astronomical basis of the Hindu calendar § sauramana

The Hindu calendar divides the zodiac into twelve division called rāśi ("group"). The Sun appears to move around the Earth through different divisions/constellations in the sky throughout the year, which in reality is actually caused by the Earth revolving around the Sun. The rāśis have 30° each and are named for constellations found in the zodiac.[46]

The time taken by the Sun to transit through a rāśi is a solar month whose name is identical to the name of the rāśi. In practice, solar months are mostly referred as rāśi (not months).

The solar months are named differently in different regional calendars. While the Malayalam calendar broadly retains the phonetic Sanskrit names, the Bengali and Tamil calendars repurpose the Sanskrit lunar month names (Chaitra, Vaishaka etc.) as follows:

* The Tamil calendar replaces Mesha, Vrisha etc. with Chithirai, Vaigasi etc.
* The Bengali calendar is similar to the Tamil calendar except in that it starts the year with Boiśākh (instead of Choitrô), followed by Jyoisthô etc. The Assamese and Odia calendars too are structured the same way.

The solar months (rāśi) along with their equivalent names in the Bangali, Malayalam and Tamil calendar are given below:

Hindu Solar Zodiac and Months  #  | English/Latin[46] | Sanskrit[46] | Sanskrit meaning[46] | Assamese | Bengali | Sylheti | Malayalam  | Odia | Tamil  | Tulu | Gregorian

|
|
|
|
|
|
|
|
|
|
|

1  | Aries | Meṣa  | ram  | ব’হাগ (Böhag) | বৈশাখ (Boiśākh) | ꠛꠂꠡꠣꠉ (Boiśag)  | മേടം (Mēḍaṃ)  | ବୈଶାଖ (Baiśākha)  | சித்திரை (Śittirai)  | Paggu  | April–May
2  | Taurus | Vṛṣabha  | bull  | জেঠ (Zeth) | জ্যৈষ্ঠ (Jyoisthô) | ꠎꠦꠑ (Zeṭ)  | ഇടവം (Iḍavaṃ)  | ଜ୍ୟେଷ୍ଠ (Jyēṣṭha)  | வைகாசி (Vaigāsi)  | Beshya | May–June
3  | Gemini | Mithuna  | twins  | আহাৰ (Ahar) | আষাঢ় (Āsādh) | ꠀꠀꠠ (Aáṛ)  | മിഥുനം (Mithunaṃ)  | ଆଷାଢ଼ (Āṣāḍha)  | ஆனி (Āṉi)  | Kaarthel | June–July
4  | Cancer | Karkaṭa  | crab  | শাওণ (Xaün) | শ্রাবণ (Śrābôṇ) | ꠢꠣꠃꠘ (Haun)  | കർക്കടകം (Karkkaṭakam)  | ଶ୍ରାବଣ (Śrābaṇa)  | ஆடி (Āḍi)  | Aati | July–August
5  | Leo | Siṁha  | lion  | ভাদ (Bhado) | ভাদ্র (Bhādrô) | ꠜꠣꠖꠧ (Bádô)  | ചിങ്ങം (Ciṅṅaṃ)  | ଭାଦ୍ରବ (Bhādraba)

ଭାଦ୍ର (Bhādra)

| ஆவணி (Āvaṇi)  | Sōna | August–September
6  | Virgo | Kanyā  | girl  | আহিন (Ahin) | আশ্বিন (Āśhshin) | ꠀꠁꠘ (Aín)  | കന്നി (Kanni)  | ଆଶ୍ୱିନ (Āśvina)  | புரட்டாசி (Puraṭṭāsi)  | Nirnaal | September–October
7  | Libra | Tulā  | scales  | কাতি (Kati) | কার্তিক (Kārtik) | ꠇꠣꠔ꠆ꠔꠤ (Xatti)  | തുലാം (Tulāṃ)  | କାର୍ତ୍ତିକ (Kārttika)  | ஐப்பசி (Aippasi)  | Bonthel | October–November
8  | Scorpio | Vṛścika  | scorpion  | আঘোণ (Aghün) | অগ্রহায়ণ (Ôgrôhāyôn) | ꠀꠊꠘ (Agốn)  | വൃശ്ചികം (Vr̥ścikaṃ)  | ମାର୍ଗଶିର (Mārgaśira)  | கார்த்திகை (Kārttigai)  | Jaarde | November–December
9  | Sagittarius | Dhanus  | archery bow  | পুহ (Puh) | পৌষ (Poush) | ꠙꠥꠡ (Fuś)  | ധനു (Dhanu)  | ପୌଷ (Pauṣa)  | மார்கழி (Mārgaḻi)  | Perarde | December–January
10  | Capricorn | Makara  | sea monster  | মাঘ (Magh) | মাঘ (Māgh) | ꠝꠣꠊ (Mag)  | മകരം (Makaram)  | ମାଘ (Māgha)  | தை

(Tai)

| Puyinthel | January–February
11  | Aquarius | Kumbha  | water pot  | ফাগুন (Phagun) | ফাল্গুন (Phālgun) | ꠚꠣꠟ꠆ꠇꠥꠘ (Fálkun)  | കുംഭം (Kumbham)  | ଫାଲ୍‌ଗୁନ (Phālguna)

ଫଗୁଣ (Phaguṇa)

| மாசி

(Māsi)

| Maayi | February–March
12  | Pisces | Mīna  | fish  | চ’ত (Söt) | চৈত্র (Choitrô) | ꠌꠂꠔ (Soit)  | മീനം (Mīnaṃ)  | ଚୈତ୍ର (Chaitra)  | பங்குனி (Paṅguṉi)  | Suggi | March–April

The solar months (rāśi) along with the approximate correspondence to Hindu seasons and Gregorian months are:[30]

Rāśi  | Sidereal signs | Gregorian
months[31] | Ṛtu
(season)  | Ṛtu in Devanagari script  | Bengali name for Ṛtu | Gujarati name for Ṛtu | Kannada name for Ṛtu | Kashmiri name for Ṛtu | Malayalam name for Ṛtu | Odia name for Ṛtu | Tamil name for Ṛtu | Telugu name for Ṛtu | Tibetan name for Ṛtu | Kalachakra tantra Tibetan-name for Ṛtu

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Mīna

Meṣa

| ♓

| Mid March–

Mid May

| Vasanta

(Spring)

| वसन्त  | বসন্ত (Bôsôntô)  | વસંત ઋતુ (Vasaṃta r̥tu)  | ವಸಂತ ಋತು (Vasaṃta Ṛtu)  | سونٛتھ

[sõ:tʰ]

| പൂക്കാലം (Pookkaalam)  | ବସନ୍ତ (Basanta)  | இளவேனில் (ilavenil)  | వసంత ఋతువు (Vasaṃta Ṛtuvu)  | དཔྱིད་ར་བ་དང་དཔྱིད་བར་མ (shid rawa, thang, shid warma)  | དཔྱིད་ཀ (shid ka)
Vṛṣabha

Mithuna

| ♉

| Mid May–

Mid July

| Grīṣma

(Summer)

| ग्रीष्म  | গ্রীষ্ম (Grishsho)  | ગ્રીષ્મ ઋતુ (Grīṣma r̥tu)  | ಗ್ರೀಷ್ಮ ಋತು (Grīṣma Ṛtu)  | گرٛێشِم

[greʃim]

| വേനൽ (Venal)  | ଗ୍ରୀଷ୍ମ (Grīṣma)  | முதுவேனில் (mudhuvenil)  | గ్రీష్మ ఋతువు (Grīṣma Ṛtuvu)  | དཔྱིད་ཐ་མ་དང་དབྱར་ར་བ། (shid dama, thang, yar rawa)  | སོ་ག(soga)
Karkaṭa

Siṃha

| ♋

| Mid July–

Mid Sep

| Varṣā

(Monsoon)

| वर्षा  | বর্ষা (Bôrsha)  | વર્ષા ઋતુ (Varṣa r̥tu)  | ವರ್ಷ ಋತು (Varṣa Ṛtu)  | ؤہراتھ

[wəhraːtʰ]

| മഴക്കാലം (Mazhakkalam)  | ବର୍ଷା (Barṣā)  | கார் (kaar)  | వర్ష ఋతువు (Varṣa Ṛtuvu)  | དབྱར་བར་མ་དང་དབྱར་ཐ་མ (yarwarma, thang, yardama)  | དབྱར་ག (yarka)
Kanyā

Tulā

| ♍

| Mid Sep–

Mid Nov

| Śarad

(Autumn)

| शरद्  | শরৎ(Shôrôt)  | શરદ ઋતુ (Śarad r̥tu)  | ಶರದೃತು (Śaradṛtu)  | ہَرُد

[harud]

| ഇലപൊഴിയും കാലം (Elapzhiyum kalam)  | ଶରତ (Śarata)  | குளிர் (kulir)  | శరదృతువు (Śaradṛtuvu)  | སྟོན་ར་བ་དང་སྟོན་བར་མ (ston rawa, thang, ston warma)  | སྟོན་ཁ (stonka)
Vṛścika

Dhanu

| ♏

| Mid Nov–

Mid Jan

| Hemanta

(Pre-Winter)

| हेमन्त  | হেমন্ত (Hemôntô)  | હેમંત ઋતુ (Hēmaṃta r̥tu)  | ಹೇಮಂತ ಋತು (Hēmaṃta Ṛtu)  | وَنٛدٕ

[wandɨ]

| കുളിർക്കാലം (Kulirkkaalam)  | ହେମନ୍ତ (Hemanta)  | முன்பனி (munpani)  | హేమంత ఋతువు (Hēmaṃta Ṛtuvu)  | སྟོན་ཐ་མ་དང་དགུན་ར་བ (ston da ma, thang, dgun rawa)  | དགུན་སྟོད (dgun stod)
Makara

Kumbha

| ♑

| Mid Jan–

Mid March

| Śiśira

(Winter)

| शिशिर  | শীত (Śeet)  | શિશિર ઋતુ (Śiśira r̥tu)  | ಶಿಶಿರ ಋತು (Śiśira Ṛtu)  | شِشُر

[ʃiʃur]

| മഞ്ഞുകാലം (Manjnju kaalam)  | ଶୀତ/ଶିଶିର (Śīta/Śiśira)  | பின்பனி (pinpani)  | శిశిర ఋతువు (Śiśira Ṛtuvu)  | དགུན་བར་མ་དང་དགུན་ཐ་མ (dgun warma, thang, dgun dama)  | དགུན་སྨད (dgun smad)

The names of the solar months are also used in the Darian calendar for the planet Mars.

### Lunar months

[edit]

See also: Astronomical basis of the Hindu calendar § chandramana

Lunar months are defined based on lunar cycles, i.e. the regular occurrence of new moon and full moon and the intervening waxing and waning phases of the moon.

#### Paksha

[edit]

See also: Astronomical basis of the Hindu calendar § paksha

A lunar month contains two fortnights called pakṣa (पक्ष, literally "side").[2] One fortnight is the bright, waxing half where the moon size grows and it ends in the full moon. This is called "Gaura Paksha" or Shukla Paksha.[47] The other half is the darkening, waning fortnight which ends in the new moon. This is called "Vadhya Paksha" or Krishna Paksha.[2] The Hindu festivals typically are either on or the day after the full moon night or the darkest night (amavasya, अमावास्या), except for some associated with Krishna, Durga or Rama. The lunar months of the hot summer and the busy major cropping-related part of the monsoon season typically do not schedule major festivals.[48]

#### Amānta and Purnimānta systems

[edit]

See also: Astronomical basis of the Hindu calendar § chandramana

Two traditions have been followed in the Indian subcontinent with respect to lunar months: the amānta tradition, which ends the lunar month on new moon day (similar to the Islamic calendar) and the purnimānta tradition, which ends it on full moon day.[49] As a consequence, in the amanta tradition, Shukla paksha precedes Krishna paksha in every lunar month, whereas in the purnimānta tradition, Krishna paksha precedes Shukla paksha in every lunar month. As a result, a Shukla paksha will always belong to the same month in both traditions, whereas a Krishna paksha will always be associated with different (but succeeding) months in each tradition.

Variations in the naming of lunar months  | Krishna Paksha  | Shukla Paksha  | Krishna Paksha

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Amānta | Phālguna  | Chaitra
Purnimānta | Chaitra  | Vaishākha

The amanta (also known as Amāvasyānta or Mukhyamana) tradition is followed by most Indian states that have a peninsular coastline (except Assam, West Bengal, Odisha, Tamil Nadu and Kerala, which use their own solar calendars). These states are Gujarat, Maharashtra, Goa, Karnataka, Andhra Pradesh and Telangana. Nepal and most Indian states north of the Vindhya mountains follow the poornimānta (or Gaunamana) tradition.

The poornimānta tradition was being followed in the Vedic era. It was replaced with the amanta tradition as the Hindu calendar system prior to the 1st century BCE, but the Poornimanta tradition was restored in 57 BCE by king Vikramaditya, who wanted to return to the Vedic roots.[49] The presence of this system is one of the factors considered in dating ancient Indian manuscripts and epigraphical evidence that have survived into the modern era.[49][50]

The two traditions of Amanta and Purnimanta systems have led to alternate ways of dating any festival or event that occurs in a Krishna paksha in the historic Hindu, Buddhist or Jain literature, and contemporary regional literature or festival calendars. For example, the Hindu festival of Maha Shivaratri falls on the fourteenth lunar day of Magha's Krishna paksha in the Amanta system, while the same exact day is expressed as the fourteenth lunar day of Phalguna's Krishna paksha in the Purnimanta system.[51] Both lunisolar calendar systems are equivalent ways of referring to the same date, and they continue to be in use in different regions, though the Purnimanta system is now typically assumed as implied in modern Indology literature if not otherwise specified.[31][30]

#### List

[edit]

The names of the Hindu months vary by region. Those Hindu calendars which are based on lunar cycle are generally phonetic variants of each other, while the solar cycle are generally variants of each other too, suggesting that the timekeeping knowledge travelled widely across the Indian subcontinent in ancient times.[1][30]

During each lunar month, the Sun transits into a sign of the zodicac (sankranti). The lunar month in which the Sun transits into Mesha is named Chaitra and designated as the first month of the lunar year.

A few major calendars are summarized below:

Lunar calendar month names in different Hindu calendars[1] Vikrami
(lunar)[31] | Sankranti  | Bhojpuri  | Hindi  | Kannada  | Kashmiri  | Maithili  | Marathi  | Meitei  | Nepali  | Punjabi  | Sindhi  | Telugu  | Tulu  | Tibetan  | Gregorian

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Caitra | Meṣa  | 𑂒𑂶𑂞, chait | चैत/चैत्र  | ಚೈತ್ರ (chaitra)  | ژِتھٕر [t͡sitʰɨr] | 𑒔𑒻𑒞𑒱 (chait)  | चैत्र  | ꯂꯝꯇꯥ, camta | चैत(chait)  | ਚੇਤ, chēt | چيٽُ, chēṭu | చైత్రము (chaitramu)  | suggi  | ནག་པ་ཟླ་བ  | March–April
Vaiśākha | Vṛṣa  | 𑂥𑂶𑂮𑂰𑂎, baisākh | बैसाख/वैशाख  | ವೈಶಾಖ (vaisākha)  | وَہؠکھ [wahjakʰ]

بیساکھ [beːsaːkʰ]

| 𑒥𑒻𑒮𑒰𑒐 (baishakh)  | वैशाख  | ꯁꯖꯤꯕꯨ, sajibu | वैशाख (baishākh)  | ਵਸਾਖ, vasākh | ويساکُ, vēsāku

or وِهاءُ, vihāu

| వైశాఖము (vaiśākhamu)  | paggu  | ས་ག་ཟླ་བ  | April–May
Jyeṣṭha | Mithuna  | 𑂔𑂵𑂘, jeṭh | जेठ/ज्येष्ठ  | ಜ್ಯೇಷ್ಠ (jyeshta)  | زیٹھ

[zeːʈʰ]

| 𑒖𑒹𑒚 (jeth)  | ज्येष्ठ  | ꯀꯥꯂꯦꯟ, kalen | जेठ(jēṭh)  | ਜੇਠ|jēṭh}}  | ڄيٺُ, jjēṭhu | జ్యేష్ఠము(jyēsṭhamu)  | bēsha  | སྣྲོན་ཟླ་བ  | May–June
Āṣāḍha | Karka  | 𑂄𑂮𑂰𑂜, āsār̤h | असाढ़/आषाढ  | ಆಷಾಢ (āshāda)  | ہار

[haːr]

| 𑒁𑒮𑒰𑒜𑓃 (asadh)  | आषाढ  | ꯏꯉꯥ, eenga | असार (asār)  | ਹਾੜ੍ਹ, hāṛh | آکاڙُ, ākhāṛu

or آهاڙُ, āhāṛu

| ఆషాఢము (āṣāḍhamu)  | kārte  | ཆུ་སྟོད་ཟླ་བ  | June–July
Śrāvaṇa | Siṃha  | 𑂮𑂰𑂫𑂢, sāwan | सावन/श्रावण  | ಶ್ರಾವಣ (shrāvana)  | شرٛاوُن [ʃraːwun] | 𑒮𑒰𑒍𑒢 (saon)  | श्रावण  | ꯏꯉꯦꯟ, eengen | साउन (sāun)  | ਸਾਓਣ, sāoṇ | سانوَڻُ, sānvaṇu | శ్రావణము (śrāvaṇamu)  | aaṭi  | གྲོ་བཞིན་ཟླ་བ  | July–August
Bhādrapada | Kanyā  | 𑂦𑂰𑂠𑂷, bhādo | भादों/भाद्रपद  | ಭಾದ್ರಪದ (bhādrapada)  | بٲدٕرپؠتھ [bəːdɨrpjatʰ] | 𑒦𑒰𑒠𑒼 (bhado)  | भाद्रपद  | ꯊꯧꯋꯥꯟ, thouwan | भदौ (bhadau)  | ਭਾਦੋਂ, bhādōn | بَڊو, baḍo

or بَڊرو, baḍro

| భద్రపదము (bhadrapadamu)  | sona  | ཁྲིམས་སྟོད་ཟླ་བ  | August–September
Aśvin | Tulā  | 𑂄𑂮𑂱𑂢, āsin | आसिन/आश्विन  | ಆಶ್ವಯುಜ (āswayuja)  | ٲشِد

[əːʃid]

| 𑒂𑒮𑒱𑒢 (aasin)  | आश्विन  | ꯂꯥꯡꯕꯟ, langban | असोज (asoj)  | ਅੱਸੂ, assū | اَسُو, asū | ఆశ్వయుజము (āśvayujamu)  | kanya/nirnāl  | ཐ་སྐར་ཟླ་བ  | September–October
Kārttika | Vṛśchika  | 𑂍𑂰𑂞𑂱𑂍, kātik | का(र्)तिक  | ಕಾರ್ತೀಕ (kārtika)  | کارتِکھ

[kaːrtikʰ]

| 𑒏𑒰𑒞𑒱𑒏 (katik)  | कार्तिक  | ꯃꯦꯔꯥ, mera | कात्तिक (kāttik)  | ਕੱਤਕ, kattak | ڪَتِي, katī | కార్తికము (kārtikamu)  | bontel  | སྨིན་དྲུག་ཟླ་བ  | October–November
Mārgaśīrṣa | Dhanu  | 𑂃𑂏𑂯𑂢, agahan | अघन/अग्रहायण, मँगसिर/मार्गशीर्ष  | ಮಾರ್ಗಶಿರ (mārgasira)  | مَنٛجہۆر [mand͡ʒhor] | 𑒁𑒑𑒯𑒢 (agahan)  | मार्गशीर्ष  | ꯍꯤꯌꯥꯡꯀꯩ, heeyangkei | मंसिर (mangsir)  | ਮੱਘਰ, magghar | ناهرِي, nāhrī

or مَنگهِرُ, manghiru

| మార్గశిరము (mārgaśiramu)  | jārde  | མགོ་ཟླ་བ  | November–December
Pauṣa | Makara  | 𑂣𑂴𑂮, pūs | पूस/पौष  | ಪುಷ್ಯ (pushya)  | پوہ [poːh]

or پۄہ [pɔh]

| 𑒣𑒴𑒮 (poos)  | पौष  | ꯄꯣꯢꯅꯨ, poinu | पुष (puṣ)  | ਪੋਹ, poh | پوهُه, pohu | పుష్యము (puṣyamu)  | perarde  | རྒྱལ་ཟླ་བ  | December–January
Māgha | Kumbha  | 𑂧𑂰𑂐, māgh | माघ  | ಮಾಘ (magha)  | ماگ

[maːg]

| 𑒧𑒰𑒒 (magh)  | माघ  | ꯋꯥꯛꯆꯤꯡ, wakching | माघ (magh)  | ਮਾਘ, māgh | مانگھُه, mānghu | మాఘము (māghamu)  | puyintel  | མཆུ་ཟླ་བ  | January–February
Phālguna | Mīna  | 𑂤𑂰𑂏𑂳𑂢, fāgun | फा(ल्)गुन  | ಫಾಲ್ಗುಣ (phalguna)  | پھاگُن

[pʰaːgun]

| 𑒤𑒰𑒑𑒳𑒢 (fagun)  | फाल्गुण  | ꯐꯥꯢꯔꯦꯜ, fairel | फागुन (phagun)  | ਫੱਗਣ, phaggaṇ | ڦَڳُڻُ, phaguṇu | ఫాల్గుణము (phālguṇamu)  | māyi  | དབོ་ཟླ་བ  | February–March

### Corrections between lunar and solar months

[edit]

See also: Astronomical basis of the Hindu calendar § adhikamasa

The astronomical basis of the Hindu lunar months. Also illustrates Adhika Masa (Year 2-Bhadrapada) repeats; the first time the Sun moves entirely within Simha Rashi thus rendering it an Adhika Masa

Twelve Hindu mas (māsa, lunar month) are equal to approximately 354 days, while the length of a sidereal (solar) year is about 365 days. This creates a difference of about eleven days, which is offset every (29.53/10.63) = 2.71 years, or approximately every 32.5 months.[29] Purushottam Maas or Adhik Maas is an extra month that is inserted to keep the lunar and solar calendars aligned. The twelve months are subdivided into six lunar seasons timed with the agriculture cycles, blooming of natural flowers, fall of leaves, and weather. To account for the mismatch between lunar and solar calendar, the Hindu scholars adopted intercalary months, where a particular month just repeated. The choice of this month was not random, but timed to sync back the two calendars to the cycle of agriculture and nature.[29][30]

The repetition of a month created the problem of scheduling festivals, weddings and other social events without repetition and confusion. This was resolved by declaring one month as Shudha (pure, clean, regular, proper, also called Deva month) and the other Mala or Adhika (extra, unclean and inauspicious, also called Asura month).[52]

The Hindu mathematicians who calculated the best way to adjust the two years, over long periods of a yuga (era, tables calculating 1000s of years), they determined that the best means to intercalate the months is to time the intercalary months on a 19-year cycle, similar to the Metonic cycle used in the Hebrew calendar. This intercalation is generally adopted in the 3rd, 5th, 8th, 11th, 14th, 16th and 19th year of this cycle. Further, the complex rules rule out the repetition of Mārgaśīrṣa (also called Agrahayana), Pausha and Magha lunar months. The historic Hindu texts are not consistent on these rules, with competing ideas flourishing in the Hindu culture.[53]

#### Rare corrections

[edit]

The Hindu calendar makes further rare adjustments, over a cycle of centuries, where a certain month is considered kshaya month (dropped). This occurs because of the complexity of the relative lunar, solar and earth movements. Underhill (1991) describes this part of Hindu calendar theory: "when the sun is in perigee, and a lunar month being at its longest, if the new moon immediately precedes a sankranti, then the first of the two lunar months is deleted (called nija or kshaya)." This, for example, happened in the year 1 BCE, when there was no new moon between Makara sankranti and Kumbha sankranti, and the month of Pausha was dropped.[54]

## Day

[edit]

Just like months, the Hindu calendar has two measures of a day, one based on the lunar movement and the other on solar. The solar (saura) day or civil day, called divasa (दिवस), has been what most Hindus traditionally use, is easy and empirical to observe, with or without a clock, and it is defined as the period from one sunrise to another. The lunar day is called tithi (तिथि), and this is based on complicated measures of lunar movement. A lunar day or tithi may, for example, begin in the middle of an afternoon and end next afternoon.[55] Both these days do not directly correspond to a mathematical measure for a day such as equal 24 hours of a solar year, a fact that the Hindu calendar scholars knew, but the system of divasa was convenient for the general population. The tithi have been the basis for timing rituals and festivals, while divasa for everyday use. The Hindu calendars adjust the mismatch in divasa and tithi, using a methodology similar to the solar and lunar months.[56]

A tithi is technically defined in Vedic texts, states John E. Cort, as "the time required by the combined motions of the Sun and Moon to increase (in a bright fortnight) or decrease (in a dark fortnight) their relative distance by twelve degrees of the zodiac.[57] These motions are measured using a fixed map of celestial zodiac as reference, and given the elliptical orbits, a duration of a tithi varies between 21.5 and 26 hours, states Cort.[57] However, in the Indian tradition, the general population's practice has been to treat a tithi as a solar day between one sunrise to next.[57]

A lunar month has 30 tithi. The technical standard makes each tithi contain different number of hours, but helps the overall integrity of the calendar. Given the variation in the length of a solar day with seasons, and the Moon's relative movements, the start and end time for tithi varies over the seasons and over the years, and the tithi adjusted to sync with divasa periodically with intercalation.[58]

### Weekday/Vāsara

[edit]

Vāsara refers to the weekdays in Sanskrit.[59] Also referred to as Vara and used as a suffix.[45] The correspondence between the names of the week in Hindu and other Indo-European calendars are exact. This alignment of names probably took place sometime during the 3rd century CE.[60][61] The weekday of a Hindu calendar has been symmetrically divided into 60 ghatika, each ghatika (24 minutes) is divided into 60 pala, each pala (24 seconds) is subdivided into 60 vipala, and so on.[60]

Names of the weekdays in different languages  No.  | Sanskrit[60][61] | Latin weekday  | Celestial object  | Assamese | Bengali | Bhojpuri | Gujarati | Hindi | Kannada | Kashmiri | Konkani | Malayalam | Maithili | Marathi | Meitei
(Manipuri)  | Nepali | Odia | Punjabi
(Hindus and Sikhs)[note 1] | Sindhi | Sylheti | Tamil | Telugu | Urdu | Balinese | Cham

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1  | Ravivāsara
रविवासर or
Surya vāsara
आदित्य वासर  | Sunday/dies Solis | Ravi, Aditya = Sun | Dêûbār/Rôbibār
দেওবাৰ/ৰবিবাৰ  | Rôbibār
রবিবার  | Etwār
𑂉𑂞𑂫𑂰𑂩 | Ravivār
રવિવાર  | Ravivār
रविवार  | Bhānuvāra
ಭಾನುವಾರ  | [aːtʰwaːr] آتھوار | etār
𑂉𑂞𑂫𑂰𑂩 | Njaayar
ഞായർ  | Ravidin
𑒩𑒫𑒱𑒠𑒱𑒢  | Ravivāra
रविवार  | Nongmaijing
ꯅꯣꯡꯃꯥꯏꯖꯤꯡ  | Aaitabar
आइतवार  | Rabibāra
ରବିବାର  | Aitvār
ਐਤਵਾਰ  | Ācharu

آچَرُ

Ārtvāru

آرتوارُ

| Rôibār

ꠞꠁꠛꠣꠞ

| Nyayiru
ஞாயிறு  | Ādivāraṁ
ఆదివారం  | Itvār
اتوار | Redite
ᬋᬤᬶᬢᭂ  | Adit
2  | Somavāsara
सोमवासर or
Indu vāsara
इन्दु वासर  | Monday/dies Lunae | Soma (deity), Chandra = Moon | Xûmbār
সোমবাৰ  | Śombār
সোমবার  | Somār
𑂮𑂷𑂧𑂰𑂩 | Sōmavār
સોમવાર  | Somavār
सोमवार  | Sōmavāra
ಸೋಮವಾರ  | [t͡səndrɨwaːr]
ژٔنٛدرٕوار | Somaar
सोमार  | Thinkal
തിങ്കൾ  | Somdin
𑒮𑒼𑒧𑒠𑒱𑒢  | Somavāra
सोमवार  | Ningthoukaba
ꯅꯤꯡꯊꯧꯀꯥꯕ  | Sombar
सोमवार  | Somabāra
ସୋମବାର  | Somavār
ਸੋਮਵਾਰ  | Sūmaru

سُومَرُ

| Śombār
ꠡꠝꠛꠣꠞ  | Thingal
திங்கள்  | Sōmavāraṁ
సోమవారం  | Somvār
سوموار

Pīr
پیر

| Soma
ᬲᭀᬫ  | Thom
3  | Maṅgalavāsara
मङ्गलवासर or
Bhaumavāsara
भौम वासर  | Tuesday/dies Martis | Maṅgala = Mars | Môṅôlbār/Môṅgôlbār
মঙলবাৰ/মঙ্গলবাৰ  | Môṅgôlbār
মঙ্গলবার  | Maṅar
𑂧𑂑𑂩 | Maṅgaḷavār
મંગળવાર  | Maṅgalavār
मंगलवार  | Maṁgaḷavāra
ಮಂಗಳವಾರ  | [boːmwaːr]

بوموار

[bɔ̃waːr]

بۄنٛوار

| Mangaḷār
मंगळार  | Chovva
ചൊവ്വ  | Maṅgaldin
𑒧𑓀𑒑𑒪𑒠𑒱𑒢  | Maṅgaḷavāra
मंगळवार  | Leipakpokpa
ꯂꯩꯄꯥꯛꯄꯣꯛꯄ  | Mangalbar
मङ्गलवार  | Maṅgaḷabāra
ମଙ୍ଗଳବାର  | Maṅgalavār
ਮੰਗਲਵਾਰ  | Mangalu

مَنگلُ

Angāro

اَنڱارو

| Môṅgôlbār
ꠝꠋꠉꠟꠛꠣꠞ  | Chevvai
செவ்வாய்  | Maṁgaḷavāraṁ
మంగళవారం  | Mangal
منگل | Anggara
ᬳᬂᬕᬭ  | Angar
4  | Budhavāsara
बुधवासर or
Saumya vāsara
सौम्य वासर  | Wednesday/dies Mercurii | Budha = Mercury | Budhbār
বুধবাৰ  | Budhbār
বুধবার  | Buddh
𑂥𑂳𑂡 | Budhavār
બુધવાર  | Budhavāra
बुधवार  | Budhavāra
ಬುಧವಾರ  | [bɔdwaːr]

بۄدوار

| Budhavār
बुधवार  | Budhan
ബുധൻ  | Budhdin
𑒥𑒳𑒡𑒠𑒱𑒢  | Budhavāra
बुधवार  | Yumsakeisa
ꯌꯨꯝꯁꯀꯩꯁ  | Budhabar
बुधवार  | Budhabāra
ବୁଧବାର  | Buddhavār
ਬੁੱਧਵਾਰ  | Budharu

ٻُڌَرُ

Arbā

اَربع

| Budbār
ꠛꠥꠗꠛꠣꠞ  | Budhan
புதன்  | Budhavāraṁ
బుధవారం  | Budh
بدھ | Buda
ᬩᬸᬤ  | But
5  | Guruvāsara
गुरुवासर

Brhaspati vāsara
बृहस्पतिवासर  | Thursday/dies Iovis/Jupiter  | Deva-Guru Bṛhaspati = Jupiter | Brihôspôtibār
বৃহস্পতিবাৰ  | Brihôśpôtibār
বৃহস্পতিবার  | Biphe/Biyaphe
𑂥𑂱𑂤𑂵 / 𑂥𑂱𑂨𑂤𑂵 | Guruvār
ગુરુવાર  | Guruvār
गुरुवार

Brihaspativāra
बृहस्पतिवार

| Guruvāra
ಗುರುವಾರ  | [braswaːr]

برَٛسوار

[brʲaswaːr] برٛؠسوار

| Birestār
बिरेस्तार  | Vyaazham
വ്യാഴം  | Brihaspatidin
𑒥𑒵𑒯𑒮𑓂𑒣𑒞𑒲𑒠𑒱𑒢  | Guruvāra
गुरुवार  | Sagolsen
ꯁꯒꯣꯜꯁꯦꯟ  | Bihibar
बिहीवार  | Gurubāra
ଗୁରୁବାର  | Vīravār
ਵੀਰਵਾਰ  | Vispati

وِسپَتِ

Khamīsa

خَميِسَ

| Biśôtbār
ꠛꠤꠡꠔꠛꠣꠞ  | Vyazhan
வியாழன்  | Guruvāraṁ, Br̥haspativāraṁ
గురువారం, బృహస్పతివారం, లక్ష్మీవారం  | Gurūvār
گرووار

Jume'rāt
جمعرات

| Wrespati
ᬯ᭄ᬭᭂᬲ᭄ᬧᬢᬶ  | Jip
6  | Śukravāsara
शुक्रवासर  | Friday/dies Veneris | Śukra = Venus | Xukurbār/Xukrôbār
শুকুৰবাৰ/শুক্রবাৰ  | Śukrôbār
শুক্রবার  | Sūk
𑂮𑂴𑂍 | Śukravār
શુક્રવાર  | Śukravār
शुक्रवार  | Śukravāra
ಶುಕ್ರವಾರ  | [ʃokurwaːr]

شۆکُروار

[jumaːh]

جُمعہ

| Shukrār
शुक्रार  | Velli
വെള്ളി  | Śukradin
𑒬𑒳𑒏𑓂𑒩𑒠𑒱𑒢  | Śukravāra
शुक्रवार  | Eerai
ꯏꯔꯥꯢ  | Sukrabar
शुक्रवार  | Sukrabāra
ଶୁକ୍ରବାର  | Śukkaravār
ਸ਼ੁੱਕਰਵਾਰ  | Śukru

شُڪرُ

Jum'o

جُمعو

| Śukurbār
ꠡꠥꠇꠥꠞꠛꠣꠞ  | Velli
வெள்ளி  | Śukravāraṁ
శుక్రవారం  | Śukarvār
شکروار

or Juma'a
جمع

| Sukra
ᬲᬸᬓ᭄ᬭ  | Suk
7  | Śanivāsara
शनिवासर

Or Śaniścaravāsara शनिश्चरवासर

| Saturday/dies Saturnis | Śani = Saturn | Xônibār
শনিবাৰ  | Śônibār
শনিবার  | Sanichchar
𑂮𑂢𑂱𑂒𑂹𑂒𑂩 | Śanivār
શનિવાર  | Śanivār
शनिवार  | Śanivāra
ಶನಿವಾರ  | [baʈɨwaːr]

بَٹہٕ وار

| Shenvār
शेनवार  | Shani
ശനി  | Śanidin
𑒬𑒢𑒲𑒠𑒱𑒢  | Śanivāra
शनिवार  | Thangja
ꯊꯥꯡꯖ  | Sanibar
शनिवार  | Sanibāra
ଶନିବାର  | Śanīvār
ਸ਼ਨੀਵਾਰ

Śaniccharvār
ਸ਼ਨਿੱਚਰਵਾਰ

Saniccharvār
ਸਨਿੱਚਰਵਾਰ

Sanīvār
ਸਨੀਵਾਰ

| Chancharu

ڇَنڇَرُ

Śanscharu

شَنسچَرُ

| Śônibār
ꠡꠘꠤꠛꠣꠞ  | Shani
சனி  | Śanivāraṁ
శనివారం  | Sanīchar
سنیچر

or Haftah
ہفتہ

| Saniscara
ᬲᬦᬶᬲ᭄ᬘᬭ  | Thanchar

1. ^ Punjabi Muslims use Urdu/Arabic words for Friday / Saturday etc.[62]

The term -vāsara is often realised as vāra or vaar in Sanskrit-derived and influenced languages. There are many variations of the names in the regional languages, mostly using alternate names of the celestial bodies involved.

### Five limbs of time

[edit]

The complete Vedic calendars contain five angas or parts of information: lunar day (tithi), solar day (diwas), asterism (naksatra), planetary joining (yoga) and astronomical period (karanam). This structure gives the calendar the name Panchangam.[45] The first two are discussed above.

#### Yoga

[edit]

See the main article on yoga.

This section needs additional citations for verification. Please help improve this article by adding citations to reliable sources in this section. Unsourced material may be challenged and removed. (March 2010) (Learn how and when to remove this message)

|

The Sanskrit word Yoga means "union, joining, attachment", but in astronomical context, this word means latitudinal and longitudinal information. The longitude of the Sun and the longitude of the Moon are added, and normalised to a value ranging between 0° to 360° (if greater than 360, one subtracts 360). This sum is divided into 27 parts. Each part will now equal 800' (where ' is the symbol of the arcminute which means 1/60 of a degree). These parts are called the yogas. They are labelled:

1. Viṣkambha
2. Prīti
3. Āyuśmān
4. Saubhāgya
5. Śobhana
6. Atigaṇḍa
7. Sukarma
8. Dhrti
9. Śūla
10. Gaṇḍa
11. Vṛddhi
12. Dhruva
13. Vyāghatā
14. Harṣaṇa
15. Vajra
16. Siddhi
17. Vyatipāta
18. Variyas
19. Parigha
20. Śiva
21. Siddha
22. Sādhya
23. Śubha
24. Śukla
25. Brahma
26. Māhendra
27. Vaidhṛti

Again, minor variations may exist. The yoga that is active during sunrise of a day is the prevailing yoga for the day.

#### Karaṇa

[edit]

A karaṇa is half of a tithi. To be precise, a karaṇa is the time required for the angular distance between the Sun and the Moon to increase in steps of 6° starting from 0°. (Compare with the definition of a tithi.)

Since the tithis are 30 in number, and since 1 tithi = 2 karaṇas, therefore one would logically expect there to be 60 karaṇas. But there are only 11 such karaṇas which fill up those slots to accommodate for those 30 tithis. There are actually 4 "fixed" (sthira) karaṇas and 7 "repeating" (cara) karaṇas.

The 4 "fixed" karaṇas are:

1. Śakuni (शकुनि)
2. Catuṣpāda (चतुष्पाद)
3. Nāga (नाग)
4. Kiṃstughna (किंस्तुघ्न)

The 7 "repeating" karaṇas are:[63]

1. Vava or Bava (बव)
2. Valava or Bālava (बालव)
3. Kaulava (कौलव)
4. Taitila or Taitula (तैतिल)
5. Gara or Garaja (गरज)
6. Vaṇija (वणिज)
7. Viṣṭi (Bhadra) (भद्रा)

* Now the first half of the 1st tithi (of Śukla Pakṣa) is always Kiṃtughna karaṇa. Hence this karaṇa is "fixed".
* Next, the 7-repeating karaṇas repeat eight times to cover the next 56 half-tithis. Thus these are the "repeating" (cara) karaṇas.
* The 3 remaining half-tithis take the remaining "fixed" karaṇas in order. Thus these are also "fixed" (sthira).
* Thus one gets 60 karaṇas from those 11 preset karaṇas.

The Vedic day begins at sunrise. The karaṇa at sunrise of a particular day shall be the prevailing karaṇa for the whole day. (citation needed )

#### Nakshatra

[edit]

See also: Astronomical basis of the Hindu calendar § nakshatra

Nakshatras are divisions of ecliptic, each 13° 20', starting from 0° Aries.

## Festival calendar: Solar and Lunar dates

[edit]

Main article: List of Hindu festivals

Many holidays in the Hindu, Buddhist and Jaina traditions are based on the lunar cycles in the lunisolar timekeeping with foundations in the Hindu calendar system. A few holidays, however, are based on the solar cycle, such as the Vaisakhi, Pongal and those associated with Sankranti.[64] The dates of the lunar cycle based festivals vary significantly on the Gregorian calendar and at times by several weeks.The solar cycle based ancient Hindu festivals almost always fall on the same Gregorian date every year and if they vary in an exceptional year, it is by one day.[65]

## Regional variants

[edit]

The Hindu Calendar Reform Committee, appointed in 1952, identified more than thirty well-developed calendars, in use across different parts of India.

Variants include the lunar emphasizing Vikrama, and the Shalivahana calendars, as well as the solar emphasizing Tamil calendar and Malayalam calendar. The two calendars most widely used today are the Vikrama calendar, which is in followed in western and northern India and Nepal, the Shalivahana Shaka calendar which is followed in the Deccan region of India (Comprising present day Indian states of Telangana, Andhra Pradesh, Karnataka, Maharashtra, and Goa).[66]

### Lunar

[edit]

Calendars based on lunar cycle (lunar months in solar year, lunar phase for religious dates and new year):

* Vikram Samvat
* Vikrami era – North and Central India (Lunar)
* Gujarati samvat – Gujarat, Rajasthan
* Sindhi samvat – Sindhis
* Shalivahana calendar (Shaka era) – Used in Deccan region states of Maharashtra, Goa, Karnataka, Andhra Pradesh, Telangana
* Saptarishi era calendar – Kashmiri Pandits
* Kannada calendar \- Karnataka
* Kashmiri calendar \- Kashmir
* Maithili calendar
* Meitei calendar – Manipur
* Nepali calendar \- Nepal, Sikkim
* Punjabi calendar \- Punjab
* Sindhi calendar \- Sindh
* Telugu calendar \- Andhra Pradesh, Telangana
* Tibetan calendar \- Tibet

### Solar

[edit]

Calendars based on solar cycle (solar months in solar year, lunar phase for religious dates but new year which falls on solar date – South and Southeast Asian solar New Year):

* Assamese calendar – Assam
* Bengali calendar – West Bengal, Bangladesh, Tripura, Barrak Region of Assam and parts of Jharkhand.
* Odia calendar – Odisha
* Tirhuta Panchang – Maithilis
* Tripuri calendar – Tripura
* Malayalam calendar – Kerala
* Tamil calendar – Tamil Nadu
* Tulu calendar – Tulus
* Vikram Samvat calendar - Nepal
*     * Vi– North and Central India (Solar)
* Bikram Sambat – Nepal, Sikkim

### Other related calendars across India and Asia

[edit]

* Indian national calendar – used by Indian Government (civil calendar based on solar months)
* Vira Nirvana Samvat (Lunar) – Jain
*   * Buddhist calendar (Lunar) – Buddhist
* Tibetan calendar (Lunar) – Tibet, Ladakh, Sikkim, Arunachal Pradesh
* Pawukon calendar – Bali
* Balinese saka calendar (Lunar) – Bali
* Cham calendar (Lunar) – Chams
* Chula Sakarat (Lunar) – Myanmar
* Thai solar calendar – Thailand
* Thai lunar calendar – Thailand
* Khmer calendar (Lunar & Solar) – Cambodia

## See also

[edit]

* Hinduism
* Panjika
* Sankranti
* Ekadashi
* Panchangam
* Kollam era
* Hindu astrology
* Hindu units of time
* Malayalam calendar
* List of Hindu festivals
* Hindu units of measurement
* List of Hindu Empires and Dynasties
* Astronomical basis of the Hindu calendar

## References

[edit]

1. ^ a b c d B. Richmond (1956). Time Measurement and Calendar Construction. Brill Archive. pp. 80–82. Retrieved 18 September 2011.
2. ^ a b c d Christopher John Fuller (2004). The Camphor Flame: Popular Hinduism and Society in India. Princeton University Press. pp. 109–110. ISBN 978-0-69112-04-85.
3. ^ Klaus K. Klostermaier (2007). A Survey of Hinduism: Third Edition. State University of New York Press. p. 490\. ISBN 978-0-7914-7082-4.
4. ^ a b c Eleanor Nesbitt (2016). Sikhism: a Very Short Introduction. Oxford University Press. pp. 122–123. ISBN 978-0-19-874557-0.
5. ^ Orazio Marucchi (2011). Christian Epigraphy: An Elementary Treatise with a Collection of Ancient Christian Inscriptions Mainly of Roman Origin. Cambridge University Press. p. 289\. ISBN 978-0-521-23594-5., Quote: "the lunar year consists of 354 days".
6. ^ Anita Ganeri (2003). Buddhist Festivals Through the Year. BRB. pp. 11–12. ISBN 978-1-58340-375-4.
7. ^ Jeffery D Long (2013). Jainism: An Introduction. I.B.Tauris. pp. 6–7. ISBN 978-0-85771-392-6.
8. ^ John E. Cort (2001). Jains in the World: Religious Values and Ideology in India. Oxford University Press. pp. 142–146. ISBN 978-0-19-513234-2.
9. ^ Robert E. Buswell Jr.; Donald S. Lopez Jr. (2013). The Princeton Dictionary of Buddhism. Princeton University Press. p. 156\. ISBN 978-1-4008-4805-8.
10. ^ "Ekadasi: Why Ekadasi is celebrated in Hinduism?-by Dr Bharti Raizada". NewsGram. 22 May 2017.[permanent dead link]
11. ^ Kim Plofker 2009, p. 36.
12. ^ Kim Plofker 2009, pp. 10, 35–36, 67.
13. ^ Yukio Ohashi 1993, pp. 185–251.
14. ^ Yukio Ohashi 1999, p. 720.
15. ^ Kim Plofker 2009, pp. 35–42.
16. ^ a b Monier Monier-Williams (1923). A Sanskrit–English Dictionary. Oxford University Press. p. 353.
17. ^ a b c James Lochtefeld (2002), "Jyotisha" in The Illustrated Encyclopedia of Hinduism, Vol. 1: A–M, Rosen Publishing, ISBN 0-8239-2287-1, pp. 326–327
18. ^ a b Friedrich Max Müller (1860). A History of Ancient Sanskrit Literature. Williams and Norgate. pp. 210–215.
19. ^ Yukio Ohashi 1999, p. 719.
20. ^ a b Yukio Ohashi 1999, pp. 719–721.
21. ^ Pingree 1973, p. 2.
22. ^ Kak, Subhash (2015). "The Mahabharata and the Sindhu-Sarasvati Tradition" (PDF). Sanskrit Magazine. p. 2. Retrieved 22 January 2015.
23. ^ Eleanor Nesbitt (2016). Sikhism: a Very Short Introduction. Oxford University Press. pp. 122, 142. ISBN 978-0-19-874557-0.
24. ^ a b c Ebenezer Burgess (1989). P Ganguly, P Sengupta (ed.). Sûrya-Siddhânta: A Text-book of Hindu Astronomy. Motilal Banarsidass (Reprint), Original: Yale University Press, American Oriental Society. pp. vii–xi. ISBN 978-81-208-0612-2.
25. ^ Lionel D. Barnett (1994). Antiquities of India: An Account of the History and Culture of Ancient Hindustan. Asian Educational Services. pp. 190–192. ISBN 978-81-206-0530-5.
26. ^ Ebenezer Burgess (1989). P Ganguly, P Sengupta (ed.). Sûrya-Siddhânta: A Text-book of Hindu Astronomy. Motilal Banarsidass (Reprint), Original: Yale University Press, American Oriental Society. pp. ix–xi, xxix. ISBN 978-81-208-0612-2.
27. ^ J Fleet (1911). "Arbhatiya". Journal of the Royal Asiatic Society of Great Britain and Ireland. Cambridge University Press for the Royal Asiatic Society: 794–799.
28. ^ a b Ebenezer Burgess (1989). P Ganguly, P Sengupta (ed.). Sûrya-Siddhânta: A Text-book of Hindu Astronomy. Motilal Banarsidass (Reprint), Original: Yale University Press, American Oriental Society. pp. 26–27. ISBN 978-81-208-0612-2.
29. ^ a b c d e f g Scott L. Montgomery; Alok Kumar (2015). A History of Science in World Cultures: Voices of Knowledge. Routledge. pp. 103–106. ISBN 978-1-317-43906-6.
30. ^ a b c d e f g Nachum Dershowitz; Edward M. Reingold (2008). Calendrical Calculations. Cambridge University Press. pp. 123–133, 275–311. ISBN 978-0-521-88540-9.
31. ^ a b c d Christopher John Fuller (2004). The Camphor Flame: Popular Hinduism and Society in India. Princeton University Press. pp. 291–293. ISBN 978-0-69112-04-85.
32. ^ Pingree 1973, pp. 2–3.
33. ^ Erik Gregersen (2011). The Britannica Guide to the History of Mathematics. The Rosen Publishing Group. p. 187\. ISBN 978-1-61530-127-0.
34. ^ Nicholas Campion (2012). Astrology and Cosmology in the World's Religions. New York University Press. pp. 110–111. ISBN 978-0-8147-0842-2.
35. ^ C. K. Raju (2007). Cultural Foundations of Mathematics. Pearson. p. 205\. ISBN 978-81-317-0871-2.
36. ^ Kim Plofker 2009, pp. 116–120, 259–261.
37. ^ a b Nachum Dershowitz; Edward M. Reingold (2008). Calendrical Calculations. Cambridge University Press. pp. 123–133, 153–161, 275–311. ISBN 978-0-521-88540-9.
38. ^ a b c Richard Salomon (1998). Indian Epigraphy: A Guide to the Study of Inscriptions in Sanskrit, Prakrit, and the other Indo-Aryan Languages. Oxford University Press. pp. 181–183. ISBN 978-0-19-535666-3.
39. ^ Colette Caillat; J. G. de Casparis (1991). Middle Indo-Aryan and Jain Studies. BRILL. p. 36\. ISBN 90-04-09426-1.
40. ^ Andrea Acri (2016). Esoteric Buddhism in Mediaeval Maritime Asia: Networks of Masters, Texts, Icons. ISEAS-Yusof Ishak Institute. pp. 256–258. ISBN 978-981-4695-08-4.
41. ^ Duncan Graham (2004). The People Next Door: Understanding Indonesia. University of Western Australia Press. pp. 16–17. ISBN 978-1-920694-09-8.
42. ^ J. Gordon Melton (2011). Religious Celebrations: An Encyclopedia of Holidays, Festivals, Solemn Observances, and Spiritual Commemorations. ABC-CLIO. pp. 652–653. ISBN 978-1-59884-205-0.
43. ^ M. C. Ricklefs; P. Voorhoeve; Annabel Teh Gallop (2014). Indonesian Manuscripts in Great Britain: A Catalogue of Manuscripts in Indonesian Languages in British Public Collections. Yayasan Pustaka Obor Indonesia. pp. 49, 69–73, 81. ISBN 978-979-461-883-7.
44. ^ a b c J. G. De Casparis (1978). Indonesian Chronology. BRILL Academic. pp. 15–24. ISBN 90-04-05752-8.
45. ^ a b c Klaus K. Klostermaier (2007). A Survey of Hinduism: Third Edition. State University of New York Press. pp. 490–492. ISBN 978-0-7914-7082-4.
46. ^ a b c d Gansten, Martin (2018). "Astrology and Astronomy (Jyotiṣa)". In Jacobsen; Basu, Helene; Malinar, Angelika; Narayanan, Vasudha (eds.). Brill Encyclopedia of Hinduism Online (Knut A. ed.). Bril.
47. ^ "What is Shukla Paksha and Krishna Paksha | Phases of Moon". 22 July 2015. Archived from the original on 7 August 2020. Retrieved 20 August 2018.
48. ^ Christopher John Fuller (2004). The Camphor Flame: Popular Hinduism and Society in India. Princeton University Press. pp. 109–110, 291–293. ISBN 978-0-69112-04-85.
49. ^ a b c V. R. Ramachandra Dikshitar (1993). The Gupta Polity. Motilal Banarsidass. pp. 24–35. ISBN 978-81-208-1024-2.
50. ^ D. C. Sircar (1965). Indian Epigraphy. Motilal Banarsidass. pp. 304–305 with footnotes. ISBN 978-81-208-1166-9.
51. ^ "Maha Shivaratri date". drikpanchang.com.
52. ^ Muriel Marion Underhill (1991). The Hindu Religious Year. Asian Educational Services. pp. 20, 32 note 5. ISBN 978-81-206-0523-7.
53. ^ Robert Sewell; Śaṅkara Bālakr̥shṇa Dīkshita (1896). The Indian Calendar. S. Sonnenschein. pp. 29–34, 48–56.
54. ^ Underhill, Muriel Marion (1991). The Hindu Religious Year. Asian Educational Services. pp. 20–21. ISBN 978-81-206-0523-7.
55. ^ Muriel Marion Underhill (1991). The Hindu Religious Year. Asian Educational Services. pp. 23, 26–27. ISBN 978-81-206-0523-7.
56. ^ Muriel Marion Underhill (1991). The Hindu Religious Year. Asian Educational Services. pp. 27–28. ISBN 978-81-206-0523-7.
57. ^ a b c John E. Cort (2001). Jains in the World: Religious Values and Ideology in India. Oxford University Press. p. 228 note 2. ISBN 978-0-19-513234-2.
58. ^ Muriel Marion Underhill (1991). The Hindu Religious Year. Asian Educational Services. pp. 23–28. ISBN 978-81-206-0523-7.
59. ^ Monier Monier-Williams, वासर, Sanskrit-English Dictionary, Oxford University Press, page 948
60. ^ a b c Muriel Marion Underhill (1991). The Hindu Religious Year. Asian Educational Services. pp. 24–25. ISBN 978-81-206-0523-7.
61. ^ a b Roshen Dalal (2010). Hinduism: An Alphabetical Guide. Penguin Books. p. 89\. ISBN 978-0-14-341421-6.
62. ^ Tej Bhatia (2013). Punjabi. Routledge. pp. 208–209. ISBN 978-1-136-89460-2.
63. ^ Ebenezer Burgess (1989). Sûrya-Siddhânta: A Text-book of Hindu Astronomy. Motilal Banarsidass. pp. 107–. ISBN 978-81-208-0612-2.
64. ^ Peter J. Claus; Sarah Diamond; Margaret Ann Mills (2003). South Asian Folklore: An Encyclopedia : Afghanistan, Bangladesh, India, Nepal, Pakistan, Sri Lanka. Taylor & Francis. pp. 91–93. ISBN 978-0-415-93919-5.
65. ^ Robert Sewell; Śaṅkara Bālakr̥shṇa Dīkshita (1896). The Indian Calendar: With Tables for the Conversion of Hindu and Muhammadan Into A.D. Dates, and Vice Versa. S. Sonnenschein. pp. 9–12.
66. ^ The Shalivahan Shaka calendar follows the Amant system. The year begins on the first day of the bright fortnight of the month of Chaitra.Muriel Marion Underhill (1921). The Hindu Religious Year. Association Press. p. 15.

### Bibliography

[edit]

* Kim Plofker (2009). Mathematics in India. Princeton University Press. ISBN 978-0-691-12067-6.
* Pingree, David (1973). "The Mesopotamian Origin of Early Indian Mathematical Astronomy". Journal for the History of Astronomy. 4 (1). SAGE: 1–12. Bibcode:1973JHA.....4....1P. doi:10.1177/002182867300400102. S2CID 125228353.
* Pingree, David (1981). Jyotihśāstra : Astral and Mathematical Literature. Otto Harrassowitz. ISBN 978-3447021654.
* Yukio Ohashi (1999). Johannes Andersen (ed.). Highlights of Astronomy, Volume 11B. Springer Science. ISBN 978-0-7923-5556-4.
* Yukio Ohashi (1993). "Development of Astronomical Observations in Vedic and post-Vedic India". Indian Journal of History of Science. 28 (3).
* Maurice Winternitz (1963). History of Indian Literature, Volume 1. Motilal Banarsidass. ISBN 978-81-208-0056-4.

## Further reading

[edit]

* Reingold and Dershowitz, Calendrical Calculations, Millennium Edition, Cambridge University Press, latest 2nd edition 3rd printing released November 2004. ISBN 0-521-77752-6
* S. Balachandra Rao, Indian Astronomy: An Introduction, Universities Press, Hyderabad, 2000.
* Rai Bahadur Pandit Gaurishankar Hirachand Ojha, The Paleography of India, 2 ed., Ajmer, 1918, reprinted Manshuram Manoharlal publishers, 1993.

## External links

[edit]

Wikisource has the text of the 1911 Encyclopædia Britannica article "Hindu Chronology".

* Ahargana - The Astronomy of the Hindu Calendar Explains the various calendric elements of the Hindu calendar by means of astronomical simulations created using Stellarium
* Converter: Gregorian and 1957 Normalized Indian Calendar,
* How Hindu Calendar is shaped as per Vedic Astrology, Explains the complete relation between planets, nakshatras, Tithis and other aspects of Vedic Astrological findings corelated with astronomy.

Shalivahana Hindu calendar, United Kingdom

* Kyoto University Gregorian – Saka – Vikrami Calendar Converter Tool, M. YANO and M. FUSHIMI

This article contains Indic text. Without proper rendering support, you may see question marks or boxes, misplaced vowels or missing conjuncts instead of Indic text.

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Months of the Hindu calendar

Lunar|

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