Coptic (EET)
| Epoch | Confidence |
|---|---|
| 28 August 284 CE +22:00:00 | Exact |
Overview
The Coptic calendar, also known as the Alexandrian calendar, was a calculated solar calendar used in Egypt until the adoption of the Gregorian calendar in 1875. It is based on the ancient Egyptian calendar but with leap years every four years, keeping it in sync with the Julian calendar while sharing months and days with the Ge'ez calendar.
It has 12 months of 30 days plus a smaller 13th month of 5 or 6 days. The new year starts on the 11th or 12th of September, and years are abbreviated with 'AM', meaning Anno Martyrum, or 'Year of the Martyrs'.
The Coptic calendar is still in use today by Egyptian farmers as well as the Coptic Orthodox Church.
Info
The Ge'ez calendar is precisely aligned with the Coptic calendar for its months and days. It's epoch, translated to 'Year of the Martyrs', is counted from the year Diocletian became Emperor of Rome, which was followed by a period of mass persecution of Christians.
| Month | Days | Approx. Gregorian Dates |
|---|---|---|
| Thout | 30 | Sep 11 - Oct 10 |
| Paopi | 30 | Oct 11 - Nov 9 |
| Hathor | 30 | Nov 10 - Dec 9 |
| Koiak | 30 | Dec 10 - Jan 8 |
| Tobi | 30 | Jan 9 - Feb 7 |
| Meshir | 30 | Feb 8 - Mar 9 |
| Paremhat | 30 | Mar 10 - Apr 8 |
| Parmouti | 30 | Apr 9 - May 8 |
| Pashons | 30 | May 9 - Jun 7 |
| Paoni | 30 | Jun 8 - Jul 7 |
| Epip | 30 | Jul 8 - Aug 6 |
| Mesori | 30 | Aug 7 - Sep 5 |
| Pi Kogi Enavot | 5 or 6 | Sep 6 - Sep 10 |
Accuracy
The Coptic calendar is intrinsically based on and locked to the Julian calendar, making it perfectly accurate.
Source
Much of the information on this calendar came from its Wikipedia article.
This calendar has been calibrated using the calendar found here.