Public holidays
1557, USA, Montana
| # | Date | Public holiday |
|---|---|---|
| 1 | Tuesday, January 1, 1557 | New Year's Day |
| 2 | Monday, January 21, 1557 | Martin Luther King Day |
| 3 | Tuesday, February 12, 1557 | Mardi gras day/Lincoln's Birthday |
| 4 | Monday, February 18, 1557 | Washington's Birthday |
| 5 | Monday, May 27, 1557 | Memorial Day |
| 6 | Thursday, July 4, 1557 | Independence Day |
| 7 | Monday, September 2, 1557 | Labor Day |
| 8 | Monday, October 14, 1557 | Columbus Day |
| 9 | Tuesday, November 5, 1557 | Election Day |
| 10 | Monday, November 11, 1557 | Veterans Day |
| 11 | Thursday, November 28, 1557 | Thanksgiving |
| 12 | Wednesday, December 25, 1557 | Christmas |