Public holidays
1644, USA, Indiana
| # | Date | Public holiday |
|---|---|---|
| 1 | Friday, January 1, 1644 | New Year's Day |
| 2 | Monday, January 18, 1644 | Martin Luther King Day |
| 3 | Friday, March 25, 1644 | Good Friday |
| 4 | Monday, May 30, 1644 | Memorial Day |
| 5 | Sunday, June 19, 1644 | Juneteenth National Independence Day |
| Monday, June 20, 1644 | Juneteenth (observance) | |
| 6 | Monday, July 4, 1644 | Independence Day |
| 7 | Monday, September 5, 1644 | Labor Day |
| 8 | Monday, October 10, 1644 | Columbus Day |
| 9 | Tuesday, November 8, 1644 | Election Day |
| 10 | Friday, November 11, 1644 | Veterans Day |
| 11 | Thursday, November 24, 1644 | Thanksgiving |
| 12 | Friday, November 25, 1644 | Black Friday |
| 13 | Saturday, December 24, 1644 | Christmas Eve |
| 14 | Sunday, December 25, 1644 | Christmas |
| Monday, December 26, 1644 | Christmas (observance) |