431

The year 431 started on Thursday, January 1, and ended on Thursday, December 31.

Calendar with holidays
Holidays:
 * New Year's Day: Thursday, January 1
 * Epiphany: Tuesday, January 6
 * Mardi Gras: Tuesday, March 3
 * Ash Wednesday: Wednesday, March 4
 * Palm Sunday: Sunday, April 12
 * Good Friday: Friday, April 17
 * Easter: Sunday, April 19
 * Halloween: Saturday, October 31
 * Christmas Eve: Thursday, December 24
 * Christmas: Friday, December 25
 * New Year's Eve: Thursday, December 31