Byzantine time

Byzantine time is the final Greek Anno Mundi method of keeping time that originated in the Byzantine Empire.^[1]

It is now rarely used save for in Eastern Orthodox monasteries, for example, on Mount Athos in Greece^[2] and Mar Saba monastery in the West Bank. Ethiopia (where Oriental Orthodoxy is the largest religion of the country) also uses this type of timing.^[3]

In Byzantine time, hour 0:00:00 begins daily at sunset rather than midnight.^[1] Due to seasonal variations in the length of a day, hour zero can vary by several hours throughout the year. The Byzantine calendar is a related method of keeping dates.

See also

• Civil time
• Decimal time
• Roman timekeeping – Hour system with days divided into 24 hours
• Ottoman time also set the clocks at 12:00 at sunset.
• Relative hour – Hebrew term ascribed to an hour of a 12-hour day and how it is to be reckoned