Public holidays
1664, USA, South Dakota
| # | Date | Public holiday |
|---|---|---|
| 1 | Tuesday, January 1, 1664 | New Year's Day |
| 2 | Monday, January 21, 1664 | Martin Luther King Day |
| 3 | Monday, February 18, 1664 | Washington's Birthday |
| 4 | Monday, May 26, 1664 | Memorial Day |
| 5 | Friday, July 4, 1664 | Independence Day |
| 6 | Monday, September 1, 1664 | Labor Day |
| 7 | Tuesday, November 11, 1664 | Veterans Day |
| 8 | Thursday, November 27, 1664 | Thanksgiving |
| 9 | Thursday, December 25, 1664 | Christmas |