August 5 Holidays & Observances
1 holiday observed on August 5 in the 2026–2030 window.
Floating holidays on August 5
These observances only land on August 5 in certain years.
| Holiday | 2026 | 2027 | 2028 | 2029 | 2030 |
|---|---|---|---|---|---|
| National Sisters Day | — | — | — | Aug 5 · Sun | — |
View all August holidays
See every observance across August in one monthly calendar.
August calendar →August 5 — quick answers
- How many holidays fall on August 5?
- In the 2026–2030 window, 1 holiday and observance falls on August 5: National Sisters Day.
- What is celebrated on August 5?
- August 5 is home to National Sisters Day. Each one has its own page with history and a live countdown.
- Are any August 5 holidays public holidays?
- None of the observances on August 5 are US federal holidays; they are celebrated informally by people, brands and communities.