December 17 Holidays & Observances
2 holidays observed on December 17 in the 2026–2030 window.
Floating holidays on December 17
These observances only land on December 17 in certain years.
| Holiday | 2026 | 2027 | 2028 | 2029 | 2030 |
|---|---|---|---|---|---|
| National Ugly Christmas Sweater Day | — | Dec 17 · Fri | — | — | — |
View all December holidays
See every observance across December in one monthly calendar.
December calendar →December 17 — quick answers
- How many holidays fall on December 17?
- In the 2026–2030 window, 2 holidays and observance fall on December 17: National Maple Syrup Day, National Ugly Christmas Sweater Day.
- What is celebrated on December 17?
- December 17 is home to National Maple Syrup Day, National Ugly Christmas Sweater Day. Each one has its own page with history and a live countdown.
- Are any December 17 holidays public holidays?
- None of the observances on December 17 are US federal holidays; they are celebrated informally by people, brands and communities.