Holidays of Russia - United days of action to protect small rivers and reservoirs
Celebrated on 15 MayHolidays of Russia - United days of action to protect small rivers and reservoirs
Other holidays on 15 May
- UN Holidays - International Day of Families
- Fun Holidays - Bring Flowers to Someone Day
- International holidays - International Day of Conscientious Objector
- International holidays - International Climate Day
- Russian Holidays - Moscow Metro Day
- Holidays of South Ossetia - Day of Ossetian Language and Literature
- According to the folk calendar - Boris and Gleb the Sowers
- Birthday of Buddha in South Korea (Birthday of Buddha)
- Memorial Day of St. Athanasius the Great, Archbishop of Alexandria
- Feast of the Vutivana Icon of the Mother of God
- Feast of the Icon of the Mother of God of Putivl