2345

The year 2345 will start on Monday, January 1, and end on Monday, December 31. It will be the first year to consist of four consecutive digits in increasing order since the Middle Ages. After that, the next such year will be the year 3456.

Calendar with holidays
Holidays:
 * New Year's Day: Monday, January 1
 * Epiphany: Saturday, January 6
 * Martin Luther King Jr. Day: Monday, January 15
 * Inauguration Day: Saturday, January 20
 * Groundhog Day: Friday, February 2
 * Super Bowl Sunday: Sunday, February 4
 * Lincoln's Birthday: Monday, February 12
 * Valentine's Day: Wednesday, February 14
 * Washington's Birthday: Monday, February 19
 * Mardi Gras: Tuesday, March 6
 * Ash Wednesday: Wednesday, March 7
 * Daylight Saving Time Starts (clocks spring forward): Sunday, March 11 at 2:00 AM, which becomes 3:00 AM
 * Pi Day: Wednesday, March 14
 * Saint Patrick's Day: Saturday, March 17
 * Cesar Chavez Day: Saturday, March 31
 * April Fools' Day: Sunday, April 1
 * Palm Sunday: Sunday, April 15
 * Good Friday: Friday, April 20
 * Earth Day: Sunday, April 22
 * Easter: Sunday, April 22
 * Cinco de Mayo: Saturday, May 5
 * Mother's Day: Sunday, May 13
 * Armed Forces Day: Saturday, May 19
 * Memorial Day: Monday, May 28
 * Flag Day: Thursday, June 14
 * Father's Day: Sunday, June 17
 * Juneteenth: Tuesday, June 19
 * Independence Day: Wednesday, July 4
 * Labor Day: Monday, September 3
 * National Grandparents' Day: Sunday, September 9
 * Patriot Day: Tuesday, September 11
 * Constitution Day: Monday, September 17
 * Columbus Day: Monday, October 8
 * Indigenous Peoples' Day: Monday, October 8
 * Sweetest Day: Saturday, October 20
 * National Trick or Treat Day: Saturday, October 27
 * Halloween: Wednesday, October 31
 * Daylight Saving Time Ends (clocks fall back): Sunday, November 4 at 2:00 AM, which becomes 1:00 AM
 * Election Day: Tuesday, November 6
 * Veterans Day: Sunday, November 11
 * Thanksgiving: Thursday, November 22
 * Black Friday: Friday, November 23
 * Small Business Saturday: Saturday, November 24
 * Cyber Monday: Monday, November 26
 * Giving Tuesday: Tuesday, November 27
 * Pearl Harbor Remembrance Day: Friday, December 7
 * Christmas Eve: Monday, December 24
 * Christmas: Tuesday, December 25
 * Kwanzaa: Wednesday, December 26, 2345, to Tuesday, January 1, 2346
 * New Year's Eve: Monday, December 31