Unlike the Gregorian, Jewish, Islamic, Indian, Chinese, and Julian calendars, which all have 12 months in a year, the Ethiopian calendar has 13. The Ethiopian calendar, also known as the Ge'ez ...

ADDIS ABABA, Ethiopia (AP) — Ethiopia’s Orthodox ... Ethiopians follow the Julian calendar, which runs 13 days later than the Gregorian calendar, used by Catholic and Protestant churches.

Ethiopians follow the ancient Julian calendar, and like many other Orthodox Christians they celebrate Christmas on 7 January (or according to the Ge'ez Ethiopian calendar, the 29th day of Tahsas).