The Battle of Stamford Bridge took place at the village of Stamford Bridge, East Riding of Yorkshire, in England, on 25 September 1066, between an English army under King Harold Godwinson and an invading Norwegian force led by King Harald Hardrada and the English king's brother Tostig Godwinson.
Text from Wikipedia, licensed under CC BY-SA 4.0
The 961st anniversary falls on September 25, 2027.