Public holidays
1663, USA, Oklahoma
| # | Date | Public holiday |
|---|---|---|
| 1 | Monday, 1 January 1663 | New Year's Day |
| 2 | Monday, 15 January 1663 | Martin Luther King Day |
| 3 | Monday, 19 February 1663 | Washington's Birthday |
| 4 | Monday, 28 May 1663 | Memorial Day |
| 5 | Tuesday, 19 June 1663 | Juneteenth National Independence Day |
| 6 | Wednesday, 4 July 1663 | Independence Day |
| 7 | Monday, 3 September 1663 | Labor Day |
| 8 | Sunday, 11 November 1663 | Veterans Day |
| Monday, 12 November 1663 | Veterans Day (observance) | |
| 9 | Thursday, 22 November 1663 | Thanksgiving |
| 10 | Friday, 23 November 1663 | Black Friday |
| 11 | Monday, 24 December 1663 | Christmas Eve |
| 12 | Tuesday, 25 December 1663 | Christmas |