Italian Holidays - Tree Day
Celebrated on 21 MarchItalian Holidays - Tree Day
Other holidays on 21 March
- International holidays - World Poetry Day
- International holidays - International Day of Puppetry (International Day of Puppetry)
- UN Holidays - International Day of Forests
- UN Holidays - International Day of Navruz (Navruz)
- UN Holidays - World Down Syndrome Day
- UN Holidays - International Day for the Elimination of Racial Discrimination
- International holidays - International Color Day
- International holidays - European Day of Early Music
- International holidays - World Wood Day
- International holidays - Education Freedom Day
- UN Holidays - Week of Solidarity with Peoples Fighting Against Racism and Racial Discrimination
- Holidays of Georgia - Border Guard Day
- International holidays - Mother's Day in Arab countries
- Fun Holidays - World Home Economics Day
- According to the folk calendar - Willow-Bearer, Spring Solstice
- Absolutely Incredible Kids Day
- Memorial Day of the Venerable Lazarus and Athanasius of Murmansk
- Memorial Day of St. Theophylact the Confessor
- Feast of the Icon of the Mother of God “The Sign” Kursk-Root