Holidays of Poland - Polish Army Day, Armed Forces Day (Swieto Wojska Polskiego)
Celebrated on 15 AugustHolidays of Poland - Polish Army Day, Armed Forces Day (Swieto Wojska Polskiego)
Other holidays on 15 August
- International holidays - Archaeologist's Day
- Russian holidays - Republic Day of Tuva (Tuva Day)
- Memorial Day of Viktor Tsoi
- Russian Holidays - Aircraft Manufacturer's Day
- Funny holidays - Sweet Cucumber Festival
- Funny Holidays - Birthday Telephone Greeting "Hello"
- Fun Holidays - Chant at the Moon Day
- Indian Holidays - Indian Independence Day
- Catholic holidays - Assumption of Mary among Western Christians
- Holidays of Zoroastrianism - Festival of Amertat and Fire of Kings
- Holidays of Greece - Day of the Assumption of the Mother of God
- Holidays in Bulgaria - Assumption of the Blessed Virgin Mary
- Panama Holidays - Panama Viejo (Old Panama) Day (Panama La Vieja Day)
- Costa Rica Holidays - Mother's Day
- According to the folk calendar - Stepan Senoval
- Zimbabwe Holidays - Defense Forces Day
- Feast of the Icon of the Mother of God of Achair
- Memorial Day of St. Blessed Basil, Moscow Wonderworker
- Day of the Transfer of the Relics of the First Martyr and Archdeacon Stephen