Public holidays
1815, USA, Montana
| # | Date | Public holiday |
|---|---|---|
| 1 | Sunday, January 1, 1815 | New Year's Day |
| Monday, January 2, 1815 | New Year's Day (observance) | |
| 2 | Monday, January 16, 1815 | Martin Luther King Day |
| 3 | Sunday, February 12, 1815 | Lincoln's Birthday |
| Monday, February 13, 1815 | Lincoln's Birthday (observance) | |
| 4 | Monday, February 20, 1815 | Washington's Birthday |
| 5 | Monday, May 29, 1815 | Memorial Day |
| 6 | Tuesday, July 4, 1815 | Independence Day |
| 7 | Monday, September 4, 1815 | Labor Day |
| 8 | Monday, October 9, 1815 | Columbus Day |
| 9 | Tuesday, November 7, 1815 | Election Day |
| Friday, November 10, 1815 | Veterans Day (observance) | |
| 10 | Saturday, November 11, 1815 | Veterans Day |
| 11 | Thursday, November 23, 1815 | Thanksgiving |
| 12 | Monday, December 25, 1815 | Christmas |