From the “World days” package International Day of Peace 21 September, the UN's International Day of Peace Historical confidence: Attested In nearby years 1403 Saturday 31 Shahrivar 1403 21 September 2024 1404 Sunday 30 Shahrivar 1404 21 September 2025 1405 Monday 30 Shahrivar 1405 21 September 2026 1406 Tuesday 30 Shahrivar 1406 21 September 2027 1407 Thursday 31 Shahrivar 1407 21 September 2028 Other occasions in this package New Year's DayValentine's DayInternational Women's DayPi DayEarth HourApril Fools' DayWorld Health DayEarth Day