600

The year 600 started on Friday, January 1, and ended on Saturday, December 31. It was a leap year (in the Julian calendar, although it would not have been a leap year in the proleptic Gregorian calendar). Also, it was the last year of the 6th century.

Calendar with holidays
Holidays:
 * New Year's Day: Friday, January 1
 * Epiphany: Wednesday, January 6
 * Valentine's Day: Sunday, February 14
 * Mardi Gras: Tuesday, February 23
 * Ash Wednesday: Wednesday, February 24
 * Leap Day: Monday, February 29
 * Saint Patrick's Day: Thursday, March 17
 * 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