Public holidays
1640, USA, Hawaii
| # | Date | Public holiday |
|---|---|---|
| 1 | Sunday, January 1, 1640 | New Year's Day |
| Monday, January 2, 1640 | New Year's Day (observance) | |
| 2 | Wednesday, February 22, 1640 | Washington's Birthday |
| 3 | Monday, March 26, 1640 | Seward's Day/Prince Jonah Kuhio Kalanianaole Day |
| 4 | Friday, April 6, 1640 | Good Friday |
| 5 | Wednesday, May 30, 1640 | Memorial Day |
| 6 | Monday, June 11, 1640 | King Kamehameha I Day |
| 7 | Wednesday, July 4, 1640 | Independence Day |
| 8 | Friday, August 17, 1640 | Statehood Day |
| 9 | Monday, September 3, 1640 | Labor Day |
| 10 | Tuesday, November 6, 1640 | Election Day |
| 11 | Tuesday, December 25, 1640 | Christmas |