Public holidays
1405, USA, South Dakota
| # | Date | Public holiday |
|---|---|---|
| 1 | Tuesday, January 1, 1405 | New Year's Day |
| 2 | Friday, February 22, 1405 | Washington's Birthday |
| 3 | Thursday, May 30, 1405 | Memorial Day |
| 4 | Thursday, July 4, 1405 | Independence Day |
| 5 | Monday, September 2, 1405 | Labor Day |
| 6 | Wednesday, December 25, 1405 | Christmas |