March 31st (664) was a Thursday. It's the 90th day of the year (91st in leap years) in the Gregorian calendar. There are 275 days left to the end of the year.
March 31st Holidays in History
» Christian feast day
» Abdas of Susa
» Acathius of Melitene (Eastern Orthodox Church)
» Anesius and companions
» Saint Benjamin the Deacon and Martyr or Benjamin
» Saint Balbina or Balbina
» John Donne (Anglican Communion, Lutheran)
» March 31 (Eastern Orthodox liturgics)
» Freedom Day (Malta)
» Public holidays in Thailand National observances or King Nangklao Memorial Day (Thailand)
» Thomas Mundy Peterson called Thomas Mundy Peterson Day (New Jersey)
» Transfer Day (United States Virgin Islands known as US Virgin Islands)