1840

The year 1840 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, March 3
 * Ash Wednesday: Wednesday, March 4
 * Saint Patrick's Day: Tuesday, March 17
 * April Fools' Day: Wednesday, April 1
 * Palm Sunday: Sunday, April 12
 * Good Friday: Friday, April 17
 * Easter: Sunday, April 19
 * Independence Day: Saturday, July 4
 * Halloween: Saturday, October 31
 * Christmas Eve: Thursday, December 24
 * Christmas: Friday, December 25
 * New Year's Eve: Thursday, December 31