What Happened in 644 AD
- M 1
- T 2
- W 3
- T 4
- F 5
- S 6
- S 7
- M 8
- T 9
- W 10
- T 11
- F 12
- S 13
- S 14
- M 15
- T 16
- W 17
- T 18
- F 19
- S 20
- S 21
- M 22
- T 23
- W 24
- T 25
- F 26
- S 27
- S 28
- M 29
- T 30
- Nov 3 Umar ibn al-Khattab, second Muslim caliph, is killed in Medina by Lu'lu, an enslaved Persian captive
- Dec 14 Uthman ibn Affan, companion of Muhammad, appointed 3rd Caliph of Islam
- Nov 7 Umar ibn al-Khattāb, Second caliph of Islam, dies of injuries after assassination attempt 4 days earlier
- Dec 8 Omar I, 2nd Caliph of Islam (634-44), oversaw conquest of Persia and Egypt), murdered at 59 or 60
- M 1
- T 2
- W 3
- T 4
- F 5
- S 6
- S 7
- M 8
- T 9
- W 10
- T 11
- F 12
- S 13
- S 14
- M 15
- T 16
- W 17
- T 18
- F 19
- S 20
- S 21
- M 22
- T 23
- W 24
- T 25
- F 26
- S 27
- S 28
- M 29
- T 30
List of Years
Gregory I
Gregory XIII
Julius II
Julius III
Leo X
Pius V