| | Coptic Calendar - OrthodoxWiki |
 | | To avoid the calendar creep of the Ancient Egyptian calendar, a reform of the calendar was introduced at the time of Ptolemy III (Decree of Canopus, in 238 BC), which consisted in the intercalation of a 6th epagomenal (auxiliary) day every fourth year. |
 | | This is the reason why Old Calendarists (using the Julian and Coptic calendars) celebrate Christmas on January 7, two weeks after the New-Calendrists (using the Gregorian calendar), who celebrate Christmas on December 25. |
 | | At the Council of Nicaea, it became one duty of the Coptic Pope of Alexandria to determine the exact dates of Easter and to announce it to the rest of the Christian churches (see Pope Demetrius the Vinedresser, 3rd cent. |
| orthodoxwiki.org /Coptic_Calendar (0 words) |