Public holidays
1800, USA, Iowa
| # | Date | Public holiday |
|---|---|---|
| 1 | Wednesday, 1 January 1800 | New Year's Day |
| 2 | Monday, 20 January 1800 | Martin Luther King Day |
| 3 | Wednesday, 12 February 1800 | Lincoln's Birthday |
| 4 | Monday, 26 May 1800 | Memorial Day |
| 5 | Thursday, 19 June 1800 | Juneteenth National Independence Day |
| 6 | Friday, 4 July 1800 | Independence Day |
| 7 | Monday, 1 September 1800 | Labor Day |
| 8 | Tuesday, 11 November 1800 | Veterans Day |
| 9 | Thursday, 27 November 1800 | Thanksgiving |
| 10 | Friday, 28 November 1800 | Black Friday |
| 11 | Thursday, 25 December 1800 | Christmas |