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World Smile Day
روز جهانی لبخند
When: every year on the first Friday of October (Gregorian).
Next date: Friday 10 Mehr 1405
(2 October 2026)
The first Friday of October, a day for smiles and kindness, in memory of Harvey Ball, who drew the yellow smiley face.
World Smile Day in the years ahead
| Year | Date | Weekday | Gregorian |
| 1404 |
11 Mehr |
Friday |
3 October 2025 |
| 1405 |
10 Mehr |
Friday |
2 October 2026 |
| 1406 |
9 Mehr |
Friday |
1 October 2027 |
| 1407 |
15 Mehr |
Friday |
6 October 2028 |
| 1408 |
14 Mehr |
Friday |
5 October 2029 |
| 1409 |
12 Mehr |
Friday |
4 October 2030 |
| 1410 |
11 Mehr |
Friday |
3 October 2031 |
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