Ethiopian calendar

The Ethiopian calendar (Amharic: የኢትዮጲያ ዘመን ኣቆጣጠር; Oromo: Akka Lakkofsa Itoophiyaatti; Ge'ez: ዓዉደ ወርሕ; Tigrinya: ዓዉደ ኣዋርሕ), or Ge'ez calendar (Ge'ez: ዓዉደ ወርሕ; Tigrinya: ዓዉደ ኣዋርሕ; Amharic: የኢትዮጲያ ዘመን ኣቆጣጠር), is the official calendar in Ethiopia. It is used as both the civil calendar (in Ethiopia) and an ecclesiastical calendar (in Ethiopia and Eritrea). It is the liturgical year for Ethiopian and Eritrean Christians belonging to the Orthodox Tewahedo Churches (Ethiopian Orthodox Tewahedo Church and Eritrean Orthodox Tewahedo Church), Eastern Catholic Churches (Eritrean Catholic Church and Ethiopian Catholic Church), and Eastern Protestant Christian P'ent'ay (Ethiopian-Eritrean Evangelical) Churches. Most Protestants in the diaspora have the option of choosing the Ethiopian calendar or the Gregorian calendar for religious holidays, with this option being used given that the corresponding eastern celebration is not a public holiday in the western world. The Ethiopian calendar is a solar calendar that has more in common with the Coptic calendar of the Coptic Orthodox Church of Alexandria and Coptic Catholic Church, but like the Julian calendar, it adds a leap day every four years without exception, and begins the year on 29 August or 30 August in the Julian calendar. A gap of seven to eight years between the Ethiopian and Gregorian calendars results from an alternative calculation in determining the date of the Annunciation.[1]

The Ethiopian calendar has twelve months of thirty days plus five or six epagomenal days, which comprise a thirteenth month.[1] The Ethiopian months begin on the same days as those of the Coptic calendar, but their names are in Ge'ez. A sixth epagomenal day is added every four years, without exception, on 29 August of the Julian calendar, six months before the corresponding Julian leap day. Thus the first day of the Ethiopian calendar year, 1 Mäskäräm, for years between 1900 and 2099 (inclusive), is usually 11 September (Gregorian). It falls on 12 September in years before the Gregorian leap year, however.[1]

New Year's Day
A building in downtown Addis Ababa, Ethiopia, sports bunting in the Ethiopian national colors of green, yellow and red to mark the Ethiopian Millennium on 11 September 2007.

The Ethiopian New Year is called Kudus Yohannes in Ge'ez and Tigrinya, while in Amharic, the official language of Ethiopia it is called Enkutatash meaning "Gift of jewels".[2] It occurs on 11 September in the Gregorian Calendar; except for the year preceding a leap year, when it occurs on 12 September. The Ethiopian Calendar Year 1998 Amätä Məhrät ("Year of Mercy") began on the Gregorian Calendar Year on 11 September 2005. The Ethiopian calendar Years 1992 and 1996, however, began on the Gregorian Dates of '12 September 1999' and '2003' respectively.

This date correspondence applies for the Gregorian years 1900 to 2099. The Ethiopian calendar leap year is every four without exception, while Gregorian centurial years are only leap years when exactly divisible by 400; thus a set of corresponding dates will most often apply for a single century. As the Gregorian year 2000 is a leap year, the current correspondence lasts two centuries instead.

The start of the Ethiopian calendar year (Feast of El-Nayrouz) falls on 29 or 30 August (in the year just before the Julian leap year). This date corresponds to the Old-Style Julian Calendar; therefore, the start of the year has been transferred forward in the currently used Gregorian Calendar to 11 or 12 September (in the year just before the Gregorian leap year).[1] This deviation between the Julian and the Gregorian Calendar will increase with the passing of the time.[3]

Eras
Liturgical seasons
  • Pre-Christmas
    • Advent (Western)
    • Nativity Fast (Byzantine)
    • Annunciation (Syriac)
  • Christmas
  • Epiphany
  • Pre-Lent
  • Lent (Western) / Great Lent (Eastern)
  • Paschal Triduum
  • Easter
  • Pentecost
    • Ordinary Time (Western)
    • Apostles (East Syriac)
    • Summer (East Syriac)
    • Apostles' Fast (Byzantine)
    • Dormition Fast (Byzantine)
    • Elijah–Cross–Moses (East Syriac)
    • Dedication of the Church (Syriac)

To indicate the year, followers of the Ethiopian and Eritrean churches today use the Incarnation Era, which dates from the Annunciation or Incarnation of Jesus on 25 March AD 9 (Julian), as calculated by Annianus of Alexandria c. 400; thus its first civil year began seven months earlier on 29 August AD 8. Meanwhile, Europeans eventually adopted the calculations made by Dionysius Exiguus in AD 525 instead,[4] which placed the Annunciation 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 10 or 11 September, then seven years less for the remainder of the Gregorian year.[2][4]

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

Calendars of the world

The most important era – once widely used by Eastern Christianity, and still used by the Coptic Orthodox Church of Egypt was the Era of Martyrs, also known as the Diocletian Era, or the era of Diocletian and the Martyrs, whose first year began on 29 October 328.

Respective to the Gregorian and Julian New Year's Days, 31⁄2 to 4 months later, the difference between the Era of Martyrs and the Anno Domini is 285 years (285= 15×19). This is because in AD 525, Dionysius Exiguus decided to add 15 Metonic cycles to the existing 13 Metonic cycles of the Diocletian Era (15×19 + 13×19 = 532) to obtain an entire 532 year medieval Easter cycle, whose first cycle ended with the year Era of Martyrs 247 (= 13×20) equal to year DXXXI. It is also because 532 is the product of the Metonic cycle of 20 years and the solar cycle of 28 years. It has 13 months in a year.[4]

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, Ethiopian, and Eritrean chronologists. The twelfth 532 year-cycle of this era began on 29 August AD 360, and so 4×19 years after the Era of Martyrs.

Anno Mundi according to Anianos

Bishop Anianos preferred the Annunciation style as New Year's Day, 25 March (see above). Thus he shifted the Panodoros era by about six months, to begin on 25 March 5492 BC. In the Ethiopian calendar this was equivalent to 15 Magabit 5501 B.C. (E.C.).[5] The Anno Mundi era remained in usage until the late 19th century.[6]

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 the John-year, followed by the Matthew-year, and then the Mark-year. The year with the sixth epagomenal day is traditionally designated as the Luke-year.[7]

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

Months
Ge'ez, Tigrinya, and Amharic language
(with Amharic suffixes in parentheses)		CopticJulian
(old calendar)
start date		Gregorian
start date
[From March 1900 to February 2100]		Gregorian start date
in year after Ethiopian leap day
Mäskäräm (መስከረም)[8]Thout (Ⲑⲱⲟⲩⲧ)29 August11 September12 September
Ṭəqəmt(i) (ጥቅምት)Paopi (Ⲡⲁⲱⲡⲉ)28 September11 October12 October
Ḫədar (ኅዳር)Hathor (Ϩⲁⲑⲱⲣ)28 October10 November11 November
Taḫśaś ( ታኅሣሥ)Koiak (Ⲕⲟⲓⲁⲕ)27 November10 December11 December
Ṭərr(i) (ጥር)Tobi (Ⲧⲱⲃⲓ)27 December9 January10 January
Yäkatit (Tn. Läkatit) (የካቲት)Meshir (Ⲙⲉϣⲓⲣ)26 January8 February9 February
Mägabit (መጋቢት)Paremhat (Ⲡⲁⲣⲉⲙϩⲁⲧ)25 February10 March10 March
Miyazya (ሚያዝያ)Parmouti (Ⲡⲁⲣⲙⲟⲩⲧⲉ)27 March9 April9 April
Gənbo (t) (ግንቦት)Pashons (Ⲡⲁϣⲟⲛⲥ)26 April9 May9 May
Säne (ሰኔ)Paoni (Ⲡⲁⲱⲛⲓ)26 May8 June8 June
Ḥamle (ሐምሌ)Epip (Ⲉⲡⲓⲡ)25 June8 July8 July
Nähase (ነሐሴ)Mesori (Ⲙⲉⲥⲱⲣⲓ)25 July7 August7 August
Ṗagʷəmen/Ṗagume (ጳጐሜን/ጳጉሜ)[8]Pikougi Enavot (Ⲡⲓⲕⲟⲩϫⲓ ⲛ̀ⲁⲃⲟⲧ)24 August6 September6 September

These dates are valid only from March 1900 to February 2100. This is because 1900 and 2100 are not leap years in the Gregorian calendar, while they are still leap years in the Ethiopian calendar, meaning dates before 1900 and after 2100 will be offset.

See also
  • Egyptian calendar
  • Coptic calendar
  • Computus
  • Era of the Martyrs
  • Adoption of the Gregorian calendar

References
  1. "Ethiopia: The country where a year lasts 13 months". BBC News. 10 September 2021. Retrieved 17 September 2022.
  2. "Ethiopia celebrates New Year 7 years behind Gregorian calendar". The Africa Report.com. 9 September 2011. Retrieved 17 September 2022.
  3. Dubbi, Kallacha (5 September 2007). "Ethiopia: Millennium for Whom?". Sudan Tribune. Retrieved 17 September 2022.{{cite web}}: CS1 maint: url-status (link)
  4. Dey, Panchali. "Ethiopia, the country that follows a 13-month calendar, and is 7 years behind the rest of the world!". Times of India Travel. Retrieved 17 September 2022.
  5. "Ring in the New". 10 September 2004. Retrieved 8 February 2017.
  6. "Walters Ms. W.850, Ethiopian Gospels". Retrieved 8 February 2017. Church of Madhane Alam in Majate, 1892–1893, known from the endnote on fol. 95r, which gives a record in Amharic of a land grant to the church of Mǝğäte Mädḫane ‛Aläm, enacted in the Year of Matthew, 7385 Anno Mundi (= 1885 EC = 1892–1893 AD)
  7. Tafesse, S (11 March 2008). "The Mathematical Basis of the Calendar Used by the Ethiopian Orthodox Twahedo Church for Fasting Periods and Religious Holidays". East African Journal of Sciences. 2 (1): 79–85. doi:10.4314/eajsci.v2i1.40368. ISSN 1992-0407.
  8. "Ethiopia: Pagume - a Short Month With Many Feats". allAfrica.com. 13 September 2021. Retrieved 17 September 2022.

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 mathematischen und technischen Chronologie", Leipzig, 3 vol., 1906–1914
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