Public holidays
1857, USA, Delaware
| # | Date | Public holiday |
|---|---|---|
| 1 | Thursday, 1 January 1857 | New Year's Day |
| 2 | Monday, 19 January 1857 | Martin Luther King Day |
| 3 | Friday, 10 April 1857 | Good Friday |
| 4 | Monday, 25 May 1857 | Memorial Day |
| 5 | Friday, 19 June 1857 | Juneteenth National Independence Day |
| Friday, 3 July 1857 | Independence Day (observance) | |
| 6 | Saturday, 4 July 1857 | Independence Day |
| 7 | Monday, 7 September 1857 | Labor Day |
| 8 | Wednesday, 11 November 1857 | Veterans Day |
| 9 | Thursday, 26 November 1857 | Thanksgiving |
| 10 | Friday, 27 November 1857 | Black Friday |
| 11 | Friday, 25 December 1857 | Christmas |