Calendar
The calendar is a way to reckon time, specifically the passage of days in relation to months and years. The choice of calendar determines when the anniversaries of events will take place. Hence, it determines when and how long their celebrations—the feasts and fasts—will be, and even whether those take place at all.
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Contents
- 1 Historical origins
- 2 The Church calendar
- 3 Gregorian reforms
- 4 The New Calendar
- 5 Schism and persecutions
- 6 Astronomical appendix
- 7 References
Historical origins
Observational calendars
Lunar calendars
Solar calendars
The Church calendar
- Main article: Church calendar.
The Julian calendar
The date of Easter
The Paschal moon
Gregorian reforms
- Main article: Gregorian Calendar.
Origins
Controversy
Adoption
The New Calendar
- Main article: Revised Julian Calendar.
