From the “World days” package World Environment Day 5 June, the UN's World Environment Day Historical confidence: Attested In nearby years 1403 Wednesday 16 Khordad 1403 5 June 2024 1404 Thursday 15 Khordad 1404 5 June 2025 1405 Friday 15 Khordad 1405 5 June 2026 1406 Saturday 15 Khordad 1406 5 June 2027 1407 Monday 16 Khordad 1407 5 June 2028 Other occasions in this package New Year's DayValentine's DayInternational Women's DayPi DayEarth HourApril Fools' DayWorld Health DayEarth Day