645

The year 645 started on Saturday, January 1, and ended on Saturday, December 31.

Calendar with holidays
Holidays:
 * New Year's Day: Saturday, January 1
 * Epiphany: Thursday, January 6
 * Valentine's Day: Monday, February 14
 * Mardi Gras: Tuesday, March 8
 * Ash Wednesday: Wednesday, March 9
 * Saint Patrick's Day: Thursday, March 17
 * Palm Sunday: Sunday, April 17
 * Good Friday: Friday, April 22
 * Easter: Sunday, April 24
 * Halloween: Monday, October 31
 * Christmas Eve: Saturday, December 24
 * Christmas: Sunday, December 25
 * New Year's Eve: Saturday, December 31