Labour Day and International Workers' Solidarity Day is a public holiday in Bulgaria, known locally as Ден на труда и на международната работническа солидарност.
In 2026 it falls on Friday 1 May; in 2027 on Saturday 1 May.
The date is fixed, so only the weekday changes from year to year.
Dates, 2025 to 2028
| Year | Date | Weekday | Note |
|---|---|---|---|
| 2025 | 1 May | Thursday | |
| 2026 | 1 May | Friday long weekend | |
| 2027 | 1 May | Saturday weekend | |
| 2027 | 4 May | Tuesday | observed (moved) |
| 2028 | 1 May | Monday long weekend |