September 12th (1229) was a Wednesday. It's the 254th day of the year (255th in leap years) in the Gregorian calendar. There are 111 days left to the end of the year.
Historical Events for 12th September, 1229
» The Aragonese army under the command of James I of Aragon disembarks at Santa Ponça, Majorca, with the purpose of conquering the island.