| January 6 | King Harald of England crowned |
| February 28 | Westminster Abbey opens |
| March 23 | 18th recorded perihelion passage of Halley's Comet |
| September 21 | Battle at Fulford: Norway king Harald III Hardrada beats British militia |
| September 25 | Battle of Stampford Bridge King Harold Godwinson II of England, beaten by his brother King Harold Hardrada of Norway |
| September 28 | William the Conqueror troops sail to England |
| September 29 | William the Conqueror invade England |
| October 14 | Battle of Hastings, in which William the Conqueror wins England |
| December 25 | William the Conqueror, crowned king of England |
