399

The year 399 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
 * Mardi Gras: Tuesday, February 22
 * Ash Wednesday: Wednesday, February 23
 * Palm Sunday: Sunday, April 3
 * Good Friday: Friday, April 8
 * Easter: Sunday, April 10
 * Halloween: Monday, October 31
 * Christmas Eve: Saturday, December 24
 * Christmas: Sunday, December 25
 * New Year's Eve: Saturday, December 31