Search for "Gregorian calendar" in article titles:

1. Proleptic Gregorian calendar: The proleptic Gregorian calendar is produced by extending the Gregorian calendar backward to the dates preceding its official introduction in 1582. In nations that adopted the Gregorian calendar after its official and first introduction, dates occurring in the interim period ... (Extension of the Gregorian calendar before its introduction) [100%] 2023-12-04 [Gregorian calendar]
2. Adoption of the Gregorian calendar: The adoption of the Gregorian Calendar was an event in the early modern history of most cultures and societies, marking a change from their traditional (or "old style") dating system to the modern (or "new style") dating system – the Gregorian ... (Transition to "New Style" dating system) [77%] 2024-09-27 [Gregorian calendar]
3. Gregorian Calendar: The Gregorian Calendar, named after Pope Gregory XIII, was created in 1582 to correct errors in the Julian Calendar that became apparent over time. The Julian Calendar was actually 10 days ahead of where it should have been, and this ... [100%] 2023-08-25 [Dating Systems]