May 13th (1568) was a Monday. It's the 133rd day of the year (134th in leap years) in the Gregorian calendar. There are 232 days left to the end of the year.
Historical Events for 13th May, 1568
» Battle of Langside: the forces of Mary, Queen of Scots, are defeated by a confederacy of Scottish Protestants under James Stewart, Earl of Moray, her Sibling half known as half-brother.