August 13, 2022
The Byzantine calendar is the calendar of the Eastern Roman Empire, which was officially approved by Emperor Basil II in 988 and was used until the fall of the empire in 1453. It coincided with the Julian calendar, differing only in the names of the months translated from Latin into Greek. September 1 was considered the first day of the year, and 5509 BC was considered the beginning of the calendar. e., the estimated date of the creation of the world. Byzantium began to start the year on September 1 around 462, but it was officially recognized in 537. Nevertheless, some Byzantine chroniclers (Maxim the Confessor, Theophanes the Confessor, and George Synkel) continued to consider March 25 as the beginning of the year until the 10th century, counting from 5493 BC. is. A leap year in the Byzantine calendar was calculated in the same way as a leap year in the original version of the Julian calendar: by doubling the sixth day before the calends of March, that is, "repeating" February 24. February 29 was declared a leap day only in the Late Middle Ages.