What calendars have 13 months? Two traditional calendars of A | Ask Me
What calendars have 13 months?
Two traditional calendars of Africa have 13 months.
The Coptic calendar, also called the Alexandrian calendar, help orthodox Copts worldwide to determine the dates of religious holidays and rituals. It derived from the ancient Egyptian calendar and is still officially used in Egypt. It is divided into 13 months. The first 12 months have 30 days. The last month, called Pi Kogi Enavot or Nasie and referred to as an epagomenal month, has 5 days in a common year and 6 days in a leap year. Year 1 in the Coptic c. started on August 29, 284 in the Julian c. It is one the oldest calendar system still in use.
The Ethiopian calendar has the same system of the calculation of 13 months as the Coptic calendar. The main difference is the calculation of the date of the birth of Jesus - the Ethiopian c. is 7 to 8 years behind the Gregorian c. The main calendar in Ethiopia, it is also used by the Orthodox Tewahido Church in Eritrea.
