Public holidays
1620, USA, Montana
| # | Date | Public holiday |
|---|---|---|
| 1 | Wednesday, 1 January 1620 | New Year's Day |
| 2 | Wednesday, 12 February 1620 | Lincoln's Birthday |
| 3 | Saturday, 22 February 1620 | Washington's Birthday |
| 4 | Saturday, 30 May 1620 | Memorial Day |
| Friday, 3 July 1620 | Independence Day (observance) | |
| 5 | Saturday, 4 July 1620 | Independence Day |
| 6 | Monday, 7 September 1620 | Labor Day |
| 7 | Tuesday, 3 November 1620 | Election Day |
| 8 | Friday, 25 December 1620 | Christmas |