March 31st is the 90th day in the Gregorian calendar; it marks the anniversary of the official opening of the Eiffel Tower and the first time Daylight Saving Time goes into effect in the United States. Famous March 31st birthdays include Christopher Walken, Al Gore, Ewan McGregor, and Conrad Sewell. March 31st also marks World Backup Day.

We have 1 holiday listed for March 31.