660

The year 660 started on Wednesday, January 1, and ended on Thursday, December 31. It was a leap year.

Calendar with holidays
Holidays:
 * New Year's Day: Wednesday, January 1
 * Epiphany: Monday, January 6
 * Valentine's Day: Friday, February 14
 * Mardi Gras: Tuesday, February 18
 * Ash Wednesday: Wednesday, February 19
 * Leap Day: Saturday, February 29
 * Saint Patrick's Day: Tuesday, March 17
 * Palm Sunday: Sunday, March 29
 * Good Friday: Friday, April 3
 * Easter: Sunday, April 5
 * Halloween: Saturday, October 31
 * Christmas Eve: Thursday, December 24
 * Christmas: Friday, December 25
 * New Year's Eve: Thursday, December 31