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The Gregorian calendar is the calendar used in most parts of the world. It went into effect in October 1582 following the papal bull Inter gravissimas issued by Pope Gregory XIII, which introduced it as a modification of, and replacement for, the Julian calendar.
- Calendário gregoriano – Wikipédia, a enciclopédia livre
O calendário gregoriano é um calendário de origem europeia,...
- Conversion between Julian and Gregorian calendars - Wikipedia
Conversion between Julian and Gregorian calendars. The...
- Calendar - Wikipedia
While the Gregorian calendar is itself historically...
- Gregorian calendar - Simple English Wikipedia, the free ...
The Gregorian calendar is the calendar that is used...
- Calendário gregoriano – Wikipédia, a enciclopédia livre
17 de abr. de 2024 · Gregorian calendar, solar dating system now in general use. It was proclaimed in 1582 by Pope Gregory XIII as a reform of the Julian calendar. The Gregorian calendar differs from the Julian only in that no century year is a leap year unless it is exactly divisible by 400 (e.g., 2000).
- The Editors of Encyclopaedia Britannica
Learn about the history, features, and accuracy of the Gregorian calendar, the most widely used civil calendar in the world. Find out how it replaced the Julian calendar, how it calculates leap years, and how it is used in different countries and religions.