What is Byzantine calendar?
The '''Byzantine calendar''' was a calendar used by the [[Catholicism|Eastern Orthodox Church]] from the year 691 A.D. to 1728. It was also used by the [[Byzantine empire]] from 988 A.D. to 1453, when the empire fell, and by [[Russia]] from 988 A.D. to 1700. The Byzantine calendar is like the [[Julian calendar]], but the year starts on 1 September instead of 1 January.<ref name=Bunson142>Matthew Bunson, ''The Catholic Almanac's Guide to the Church'' (Huntington, IN: Our Sunday Visitor, 2001), p. 142</ref> Year one of the Byzantine calendar is from 1 September, 5509 B.C. to 31 August, 5508 B.C. == Background == The [[Great Schism]], dated to 1054, created two religions from what was formerly one.<ref>''Central and South-Eastern Europe 2004'' (London; New York: Europa Publications, 2003), p. 27</ref> The Western part later became the [[Roman Catholicism|Roman Catholic Church]]. The Eastern part is known as the [[Eastern Orthodox]] Church. At that time the Roman Catholic church used the Julian calendar. In 1453 the [[Byzantine Empire]] collapsed ending the use of their calendar.<ref>{{cite web |url=http://www.byzantineempires.org/byzantine-empire-calendar.html |title=Byzantine Empire Calendar |publisher=ByzantineEmpires.org |access-date=3 January 2016}}</ref> But others still used it, notably Russia. Numbering differences began to appear when the [[Gregorian calendar]] was introduced in 1582 by [[Pope Gregory XIII]].<ref>{{cite web |url=http://www.timeanddate.com/calendar/gregorian-calendar.html |title=The Gregorian calendar |publisher=Time and Date AS |access-date=3 January 2016}}</ref> == Other differences == The [[Roman calendar]] did not include dates for [[Old Testament]] [[prophet]]s.<ref name=Hynesvii>Mary Ellen Hynes; Peter Mazar, ''Companion to the Calendar'' (Chicago, IL: Liturgy Training Publications, 1993), p. vii</ref> The Byzantine calendar does.<ref name=Hynesvii/> == Russia == [[Peter the great]] became [[tsar]] of [[Russia]] in 1682.<ref>{{cite web |url=http://www.biography.com/people/peter-the-g