September 9 Holidays & Observances
2 holidays observed on September 9 in the 2026–2030 window.
Floating holidays on September 9
These observances only land on September 9 in certain years.
| Holiday | 2026 | 2027 | 2028 | 2029 | 2030 |
|---|---|---|---|---|---|
| Rosh Hashanah | — | — | — | Sep 9 · Sun | — |
| National Grandparents Day | — | — | — | Sep 9 · Sun | — |
View all September holidays
See every observance across September in one monthly calendar.
September calendar →September 9 — quick answers
- How many holidays fall on September 9?
- In the 2026–2030 window, 2 holidays and observance fall on September 9: Rosh Hashanah, National Grandparents Day.
- What is celebrated on September 9?
- September 9 is home to Rosh Hashanah, National Grandparents Day. Each one has its own page with history and a live countdown.
- Are any September 9 holidays public holidays?
- None of the observances on September 9 are US federal holidays; they are celebrated informally by people, brands and communities.