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Julian calendar
The Julian calendar began in 45 BC as a reform of the Roman calendar by Julius Caesar. It was chosen after consultation with the astronomer Sosigenes of Alexandria and was probably designed to approximate the tropical year .The Julian calendar has a regular year of 365 days divided into 12 months with a leap day added to February every four...
Timeline of Events
45BC
1.1.45 BC
The Julian calendar takes effect for the first time.
1292
11.17.1292
(O.S.) John Balliol becomes King of Scotland.
1453
5.29.1453
Fall of Constantinople: Ottoman armies under Sultan Mehmed II Fatih capture Constantinople after a 53-day siege, ending the Byzantine Empire. Although the date of May 29, 1453 is that of the Julian Calendar, the event is commemorated in Istanbul on this day of the present Gregorian calendar.
1690
7.1.1690
Glorious Revolution: Battle of the Boyne (as reckoned under the Julian calendar).
1691
7.12.1691
Battle of Aughrim (Julian calendar) – The decisive victory of William III of England's forces in Ireland.
1700
3.1.1700
Sweden introduces its own Swedish calendar, in an attempt to gradually merge into the Gregorian calendar, reverts to the Julian calendar on this date in 1712, and introduces the Gregorian Calendar on this date in 1753.
1712
2.29.1712
February 29 is followed by February 30 in Sweden, in a move to abolish the Swedish calendar for a return to the Old style.
1753
2.17.1753
In Sweden February 17 is followed by March 1 as the country moves from the Julian calendar to the Gregorian calendar.
1821
3.25.1821
(Julian Calendar) Greece revolts against the Ottoman Empire, beginning the Greek War of Independence.
1881
3.13.1881
Alexander II of Russia is killed near his palace when a bomb is thrown at him. (Gregorian date: it was March 1 in the Julian calendar then in use in Russia.)
1905
1.9.1905
According to the Julian Calendar which is used at the time, Russian workers stage a march on the Winter Palace that ends in the massacre by Tsarist troops known as Bloody Sunday, setting off the Russian Revolution of 1905.
1917
11.5.1917
October Revolution: In Tallinn, Estonia, Communist leader Jaan Anvelt leads revolutionaries in overthrowing the Provisional Government (As Estonia and Russia are still using the Julian Calendar, subsequent period references show an October 23 date).
1918
2.14.1918
The Soviet Union adopts the Gregorian calendar (on 1 February according to the Julian calendar).
7.4.1918
Bolsheviks kill Tsar Nicholas II of Russia and his family (Julian calendar date).
1927
1.1.1927
Turkey adopts the Gregorian calendar: December 18, 1926 (Julian), is immediately followed by January 1, 1927 (Gregorian).