Public holidays
1521, USA, Hawaii
| # | Date | Public holiday |
|---|---|---|
| 1 | Saturday, January 1, 1521 | New Year's Day |
| 2 | Tuesday, February 22, 1521 | Washington's Birthday |
| Friday, March 25, 1521 | Prince Jonah Kuhio Kalanianaole Day (observance) | |
| 3 | Saturday, March 26, 1521 | Prince Jonah Kuhio Kalanianaole Day |
| 4 | Friday, April 1, 1521 | Good Friday |
| 5 | Monday, May 30, 1521 | Memorial Day |
| Friday, June 10, 1521 | King Kamehameha I Day (observance) | |
| 6 | Saturday, June 11, 1521 | King Kamehameha I Day |
| 7 | Monday, July 4, 1521 | Independence Day |
| 8 | Friday, August 19, 1521 | Statehood Day |
| 9 | Monday, September 5, 1521 | Labor Day |
| 10 | Sunday, December 25, 1521 | Christmas |
| Monday, December 26, 1521 | Christmas (observance) |