While the Gregorian calendar is the most widely utilised, there are thought to be around 40 calendars used in the world today. AdvertOne of those is the Ethiopian calendar, commonly known as the Ge'ez calendar. While based on the same astronomical calculations behind the Gregorian calendar and its predecessor, the Julian calendar, the Ge'ez calendar differs in numerous ways. A year on the Ge'ez calendar consists of 12 months, each totalling 30 days and includes an unusual 13th month, called Pagume. Despite the Ge'ez calendar having been in operation since around 4 A.D, many official institutions deviate from social norms and elect to use the Gregorian calendar and 24-hour clock.
