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The Ethiopian Calendar

The Ethiopian calendar is quite similar to the Julian calendar, which was the predecessor to the Gregorian calendar most countries use today.

The exterior of Ras Makkonen Selassie church in Harar, Ethiopia.

Orthodox church in Ethiopia.

The exterior of the Orthodox Christian church Ras Makkonen Selassie in Harar, Ethiopia.


This is the main calendar used in Ethiopia. It is also the official calendar in the Orthodox Tewahido Church in both Ethiopia and Eritrea.

Solar Calendar

It is a solar calendar, based on the time it takes Earth to make 1 full orbit around the Sun, also known as a tropical year or solar year.

Same Historical Roots

The Ethiopian calendar is based on the same astronomical calculations that lie behind today's Gregorian calendar and its predecessor, the Julian calendar.

The Ethiopian calendar is closely related to the Coptic and Julian calendars, but it is not quite the same.

13 Months in a Year

A year in the Ethiopian calendar is 13 months long, with 12 months of 30 days each. The last month has 5 days in a common year and 6 days during leap year.

Like in the Julian calendar, a leap year in the Ethiopian calendar happens every 4 years without exception.

Jesus' Birth Year Main Difference

The main point of difference lies in the calculation of the date of the birth of Jesus, which means that the Ethiopian calendar is 7 to 8 years behind the Gregorian calendar.

While most Christians celebrate Christmas on December 25, Ethiopians celebrate Christmas on January 7 along with many Orthodox Christian churches around the world.

Most other Orthodox churches use the Julian calendar. A few Orthodox communities use the Revised Julian calendar instead, which is one of the most accurate calendars ever developed.

Topics: Leap Year, Calendar, Seasons

The Ethiopian Calendar
Used inEthiopia and the Orthodox Tewahido Church in Eritrea
Calendar typeSolar
Accuracy11 min per year or
1 day in 128 years
Number of daysCommon year: 365
Leap year: 366
Number of months13
Correction mechanismLeap day


Calendars Worldwide

  1. Hindu Calendar
  2. Buddhist Calendar
  3. Islamic Calendar
  4. Jewish Calendar
  5. Persian Calendar
  6. Chinese Calendar
  7. Coptic Calendar
  8. Ethiopian Calendar
  9. Revised Julian Calendar
  10. Mayan Calendar

Is there a perfect calendar?

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