April 15th (1644) was a Friday. It's the 104th day of the year (105th in leap years) in the Gregorian calendar. There are 261 days left to the end of the year.
April 15th Holidays in History
» Christian Calendar of saints e.g Feast Day:
» Abbo II of Metz
» Father Damien and Sister Marianne Cope (Episcopal Church (USA))
» Hunna
» Paternus e.g Paternus of Avranches
» April 15 (Eastern Orthodox liturgics)
» Father Damien e.g Father Damien Day (Hawaii)
» Earliest day on which Sechseläuten can fall, while April 21 is the latest; celebrated on the third Monday in April. (Zurich)
» Fordicidia (Roman Empire)
» Hillsborough Disaster Memorial (Anfield at Liverpool)
» Jackie Robinson Day (Major League Baseball)
» Latest day on which New Year festivals in Southern Asia called South and Southeast Asian cultures can fall. (see April 14)
» Tax Day, the official deadline for filing an individual Tax return (United States) or tax return (or requesting an extension). (United States, Philippines)