September 28 Holidays & Observances
2 holidays observed on September 28 in the 2026–2030 window.
Floating holidays on September 28
These observances only land on September 28 in certain years.
| Holiday | 2026 | 2027 | 2028 | 2029 | 2030 |
|---|---|---|---|---|---|
| Rosh Hashanah | — | — | — | — | Sep 28 · Sat |
View all September holidays
See every observance across September in one monthly calendar.
September calendar →September 28 — quick answers
- How many holidays fall on September 28?
- In the 2026–2030 window, 2 holidays and observance fall on September 28: Rosh Hashanah, International Bluetooth Day.
- What is celebrated on September 28?
- September 28 is home to Rosh Hashanah, International Bluetooth Day. Each one has its own page with history and a live countdown.
- Are any September 28 holidays public holidays?
- None of the observances on September 28 are US federal holidays; they are celebrated informally by people, brands and communities.