1640

The year 1640 (in the Gregorian calendar) started on Sunday, January 1, and ended on Monday, December 31. It was a leap year.

Calendar with holidays
Holidays:
 * New Year's Day: Sunday, January 1
 * Epiphany: Friday, January 6
 * Valentine's Day: Tuesday, February 14
 * Mardi Gras: Tuesday, February 21
 * Ash Wednesday: Wednesday, February 22
 * Leap Day: Wednesday, February 29
 * Saint Patrick's Day: Saturday, March 17
 * April Fools' Day: Sunday, April 1
 * Palm Sunday: Sunday, April 1
 * Good Friday: Friday, April 6
 * Easter: Sunday, April 8
 * Halloween: Wednesday, October 31
 * Christmas Eve: Monday, December 24
 * Christmas: Tuesday, December 25
 * New Year's Eve: Monday, December 31