national
Cooperatives Day - Biruni Commemoration
روز تعاون - بزرگداشت ابوریحان بیرونی
When: every year on 13 Shahrivar.
Next date: Saturday 13 Shahrivar 1406 (4 September 2027)
Cooperatives Day - Biruni Commemoration in the years ahead
| Year | Date | Weekday | Gregorian |
|---|---|---|---|
| 1404 | 13 Shahrivar | Thursday | 4 September 2025 |
| 1405 | 13 Shahrivar | Friday | 4 September 2026 |
| 1406 | 13 Shahrivar | Saturday | 4 September 2027 |
| 1407 | 13 Shahrivar | Sunday | 3 September 2028 |
| 1408 | 13 Shahrivar | Monday | 3 September 2029 |
| 1409 | 13 Shahrivar | Wednesday | 4 September 2030 |
| 1410 | 13 Shahrivar | Thursday | 4 September 2031 |