Public holidays
1990, USA, Iowa
| # | Date | Public holiday |
|---|---|---|
| 1 | Monday, 1 January 1990 | New Year's Day |
| 2 | Monday, 15 January 1990 | Martin Luther King Day |
| 3 | Monday, 12 February 1990 | Lincoln's Birthday |
| 4 | Monday, 28 May 1990 | Memorial Day |
| 5 | Tuesday, 19 June 1990 | Juneteenth National Independence Day |
| 6 | Wednesday, 4 July 1990 | Independence Day |
| 7 | Monday, 3 September 1990 | Labor Day |
| 8 | Sunday, 11 November 1990 | Veterans Day |
| Monday, 12 November 1990 | Veterans Day (observance) | |
| 9 | Thursday, 22 November 1990 | Thanksgiving |
| 10 | Friday, 23 November 1990 | Black Friday |
| 11 | Tuesday, 25 December 1990 | Christmas |