Julian calendar
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The Julian calendar is a solar calendar of 365 days in every year with an additional leap day every fourth year. The Julian calendar is still used as a religious calendar in parts of the Eastern Ortho
The Tusculum portrait of Julius Caesar
Russian icon of the Theophany (the baptism of Jesus by John the Baptist) (6 January), the highest-ranked feast which occurs on the fixed cycle of the Eastern Orthodox liturgical calendar
Marine sandglass MMM
Byzantine calendar
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The Byzantine calendar, also called the Roman calendar, the Creation Era of Constantinople or the Era of the World, was the calendar used by the Eastern Orthodox Church from c. 691 to 1728 in the Ecum
Byzantine mosaic of the Creation of Adam (Monreale Cathedral)
Creation of Adam and Eve (Russian icon, 18th c.)
God as architect of the world (frontispiece of Bible moralisée, c. 1220–1230)