Public holidays
1644, USA, Texas
| # | Date | Public holiday |
|---|---|---|
| 1 | Friday, January 1, 1644 | New Year's Day |
| 2 | Tuesday, January 19, 1644 | Confederate Heroes Day |
| 3 | Monday, February 22, 1644 | Washington's Birthday |
| Friday, March 25, 1644 | Good Friday/Prince Jonah Kuhio Kalanianaole Day (observance) | |
| 4 | Thursday, March 31, 1644 | César Chávez Day |
| 5 | Monday, May 30, 1644 | Memorial Day |
| 6 | Monday, July 4, 1644 | Independence Day |
| 7 | Saturday, August 27, 1644 | Lyndon Baines Johnson Day |
| 8 | Monday, September 5, 1644 | Labor Day |
| 9 | Saturday, December 24, 1644 | Christmas Eve |
| 10 | Sunday, December 25, 1644 | Christmas |
| Monday, December 26, 1644 | Christmas (observance) |