National Mourning Day is a public holiday in Panama, known locally as Día de Duelo Nacional.
In 2026 it falls on Sunday 20 December, with a substitute day off on Monday 21 December; in 2027 on Monday 20 December.
The date is fixed, so only the weekday changes from year to year.
Dates, 2025 to 2028
| Year | Date | Weekday | Note |
|---|---|---|---|
| 2025 | 20 December | Saturday weekend | |
| 2026 | 20 December | Sunday weekend | |
| 2026 | 21 December | Monday long weekend | observed (moved) |
| 2027 | 20 December | Monday long weekend | |
| 2028 | 20 December | Wednesday |