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The Ethiopian calendar ((アムハラ語:የኢትዮጵያ ዘመን አቆጣጠር); ''(unicode:yä'Ityoṗṗya zämän aḳoṭaṭär)'') is the principal calendar used in Ethiopia and also serves as the liturgical calendar for Christians in Eritrea and Ethiopia belonging to the Orthodox Tewahedo churches, Eastern Catholic Church and Coptic Orthodox Church. It is a solar calendar (the older Alexandrian or Coptic calendar brought to Ethiopia by missionaries) which in turn derives from the 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. A seven- to eight-year gap between the Ethiopian and Gregorian calendars results from an alternate calculation in determining the date of the Annunciation of Jesus. Like the Coptic calendar, the Ethiopic calendar has twelve months of 30 days plus five or six epagomenal days, which comprise a thirteenth month. The Ethiopian months begin on the same days as those of the Coptic calendar, but their names are in Ge'ez. The sixth epagomenal day is added every four years without exception on August 29 of the Julian calendar, six months before the Julian leap day. Thus the first day of the Ethiopian year, 1 Mäskäräm, for years between 1900 and 2099 (inclusive), is usually September 11 (Gregorian). It, however, falls on September 12 in years before the Gregorian leap year. In the Gregorian year 2015 ''Anno Domini'', the Ethiopian calendar year 2008 begins on September 12, rather than September 11, on account of this additional epagomenal day occurring September 11 every four years. == New Year's Day == Enkutatash is the word for the Ethiopian new year in Amharic, the official language of Ethiopia, while it is called ''Ri'se Awde Amet'' (Head Anniversary) in Ge'ez, the term preferred by the Ethiopian Orthodox Church. It occurs on September 11 in the Gregorian calendar, except for the year following a leap year, when it occurs on September 12. The Ethiopian calendar year 1998'' 'Amätä Məhrät'' ("Year of Mercy") began on September 11, 2005. However, the Ethiopian years 1996 and 1992 ''AM'' began on September 12, 2003 and 1999, respectively. This date correspondence applies for the Gregorian years 1900 to 2099. The Ethiopian 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. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ethiopian calendar」の詳細全文を読む スポンサード リンク
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