Public holidays
1678, USA, Delaware
| # | Date | Public holiday |
|---|---|---|
| 1 | Saturday, 1 January 1678 | New Year's Day |
| 2 | Monday, 17 January 1678 | Martin Luther King Day |
| 3 | Friday, 8 April 1678 | Good Friday |
| 4 | Monday, 30 May 1678 | Memorial Day |
| 5 | Sunday, 19 June 1678 | Juneteenth National Independence Day |
| Monday, 20 June 1678 | Juneteenth (observance) | |
| 6 | Monday, 4 July 1678 | Independence Day |
| 7 | Monday, 5 September 1678 | Labor Day |
| 8 | Friday, 11 November 1678 | Veterans Day |
| 9 | Thursday, 24 November 1678 | Thanksgiving |
| 10 | Friday, 25 November 1678 | Black Friday |
| 11 | Sunday, 25 December 1678 | Christmas |
| Monday, 26 December 1678 | Christmas (observance) |