August 15 Holidays & Observances
1 holiday observed on August 15 in the 2026–2030 window.
View all August holidays
See every observance across August in one monthly calendar.
August calendar →August 15 — quick answers
- How many holidays fall on August 15?
- In the 2026–2030 window, 1 holiday and observance falls on August 15: National Relaxation Day.
- What is celebrated on August 15?
- August 15 is home to National Relaxation Day. Each one has its own page with history and a live countdown.
- Are any August 15 holidays public holidays?
- None of the observances on August 15 are US federal holidays; they are celebrated informally by people, brands and communities.