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	Original Julian Runic

The Ethiopian calendar (Amharic: የኢትዮጵያ ዘመን አቆጣጠር ye'Ītyōṗṗyā zemen āḳoṭaṭer), also called the Ge'ez calendar, is the principal calendar used in Ethiopia and is also the liturgical year of Christians in Eritrea belonging to the Eritrean Orthodox Tewahdo Church, Eastern Catholic Church of Eritrea and Lutheran (Evangelical Church of Eritrea), where it is commonly known as the Ge'ez calendar. It is based on the older Alexandrian or Coptic calendar, which is based on the even older Egyptian calendar, but like the Julian calendar, it adds a leap day every four years without exception, and begins the year on August 29 or August 30 in the Julian calendar.

Like the Coptic calendar, the Ethiopian/Ge'ez calendar has twelve months of 30 days each plus five or six epagomenal days (usually called a thirteenth month). Furthermore, its months begin on the same days as those of the Coptic calendar, but they have different names, that are in Ge'ez. The sixth epagomenal day is added every four years without exception on August 29 in the Julian calendar, six months before the Julian leap day. Thus the first day of the Ethiopian year, 1 Mäskäräm, for years between 1901 and 2099 (inclusive), is usually September 11 (Gregorian), but falls on September 12 (Gregorian), in years before the Gregorian leap year.

Current year

The current year according to the Ethiopian calendar is 2000. There were millennium celebrations when the new year began in Ethiopia at 12 midnight Ethiopian Time on September 12. The year 2001 will begin on September 11, 2008 of the Gregorian calendar.

New Year's Day

Enkutatash is the word for the Ethiopian new year in the official language of Ethiopia: Amharic, while it is called Ri'se Awde Amet (Head Anniversary) in Ge'ez, the term preferred by the Eritrean Orthodox Tewahedo Church. It occurs on September 11 in the Gregorian calendar, except for leap years when it occurs on September 12. The Ethiopian calendar year 1998 ˈAmätä Məhrät ("Year of Mercy") began on 11 September, 2005. However, the Ethiopian years 1996 and 1992 AM began on 12 September 2003 and 1999, respectively.

The new years begin on September 11 or 12 as described above from Gregorian 1900 to 2099, but differently in other Gregorian centuries, because every fourth Ethiopian/Ge'ez year is a leap year without exception.

Eras

To indicate the year, Ethiopians and followers of the Eritrean churches today use the Incarnation Era, which dates from the Annunciation or Incarnation of Jesus on 25 March, 9 (Julian), as calculated by Annianus of Alexandria c. 400; thus its first civil year began seven months earlier on 29 August, 8 (Julian). Meanwhile, Europeans eventually adopted the calculations made by Dionysius Exiguus in AD 525 instead, which placed the Annunciation exactly eight years earlier than had Annianus. This causes the Ethiopian year number to be eight years less than the Gregorian year number from January 1 until September 10 or 11, then seven years less for the remainder of the Gregorian year.

In the past, a number of other eras for numbering years were also widely used in Ethiopia and the Axumite Kingdom:

Era of Martyrs

The most important era – once widely used by the Eastern Churches, and still used by the Coptic Church - was the Era of Martyrs, also known as the Diocletian Era, whose first year began on 29 August 284.

Respectively to the western and Julian New Year's Days about three months later, the difference between the Era of Martyrs and the Anni Domini is 285 (= 15x19) years. This is because in AD 525, Dionysius Exiguus decided to add 15 Metonic cycles to the existing 13 Metonic cycles of the Diocletian Era (15x19 + 13x19 = 532) to obtain an entire 532-year medieval Easter cycle, whose first cycle ended with the year Era of Martyrs 247 (= 13x19) equal to year DXXXI. It is also because 532 is the product of the Metonic cycle of 19 years and the Solar cycle of 28 years.

Anno Mundi according to Panodoros

Around AD 400, an Alexandrine monk called Panodoros fixed the Alexandrian Era (Anno Mundi = in the year of the world), the date of creation, on 29 August 5493 BC. After the 6th century AD, the era was used by Egyptian and Ethiopian chronologists. The twelfth 532-year-cycle of this era began on 29 August 360 AD, and so 4x19 years after the Era of Martyrs.

Anno Mundi according to Anianos

Bishop Anianos preferred the Annunciation style as New Year's Day, the 25 March (see above). Thus he shifted the Panodoros era by about six months, to begin on 25 March 5492 BC.

Leap year cycle

The four year leap-year cycle is associated with the four Evangelists: the first year after an Ethiopian leap year is named in honour of John, followed by the Matthew-year and then the Mark-year. The year with the sixth epagomenal day is traditionally designated as the Luke-year.

There are no exceptions to the four year leap-year cycle, unlike the Gregorian calendar.

Months

Ge'ez, Amharic, and Tigrinya (with Tigrinya suffixes in parenthesis)	Coptic	Gregorian start date	Start date in year after sixth epagomenal day
Mäskäräm (መስከረም)	Tut	September 11	September 12
Ṭəqəmt(i) (ጥቅምት)	Babah	October 11	October 12
Ḫədar (ኅዳር)	Hatur	November 10	November 11
Taḫśaś ( ታኅሣሥ)	Kiyahk	December 10	December 11
Ṭərr(i) (ጥር)	Tubah	January 9	January 10
Yäkatit (Tn. Läkatit) (የካቲት)	Amshir	February 8	February 9
Mägabit (መጋቢት)	Baramhat	March 10	March 10
Miyazya (ሚያዝያ)	Baramundah	April 9	April 9
Gənbot (ግንቦት)	Bashans	May 9	May 9
Säne (ሰኔ)	Ba'unah	June 8	June 8
Ḥamle (ሓምሌ)	Abib	July 8	July 8
Nähase (ነሓሴ)	Misra	August 7	August 7
Ṗagʷəmen/Ṗagumen (ጳጐሜን/ጳጉሜን)	Nasi	September 6	September 6

Note that these dates are valid only from March 1900 to February 2100.

Sources

• "The Ethiopian Calendar", Appendix IV, C.F. Beckingham and G.W.B. Huntingford, The Prester John of the Indies (Cambridge: Hakluyt Society, 1961).
• Ginzel, Friedrich Karl, "Handbuch der matematischen und technischen Chronologie", Leipzig, 3 vol., 1906-1914

External links

• Warning: In the following two links, dates in the "Ethiopian calendar" have been converted into a pseudo-Julian calendar by replacing the true Amharic Ethiopian month names by close, but not coincident, Julian names. For example, Mäskäräm is called "September" even though Mäskäräm actually begins on August 29/30 Julian (and September 11th Gregorian, the most common calendar). When they state that the Ethopian year begins on "September 1", they mean it begins on Mäskäräm 1. Similarly, when they state that Christmas occurs on "December 29" in the Ethiopian calendar, they mean it occurs on Tahsas 29.
• Ethiopian Calendar - Christian, Islamic, Jewish & Public Holidays
• Ethiopian Religious Festivals
• The Ethiopic Calendar by Aberra Molla
• Ethiopian Calendar Converter
• Ethiopian Perpetual Calendar Software
• Ethiopian Online Calendar