December 1 Holidays & Observances
4 holidays observed on December 1 in the 2026–2030 window.
Floating holidays on December 1
These observances only land on December 1 in certain years.
| Holiday | 2026 | 2027 | 2028 | 2029 | 2030 |
|---|---|---|---|---|---|
| First Sunday of Advent | — | — | — | — | Dec 1 · Sun |
| Giving Tuesday | Dec 1 · Tue | — | — | — | — |
View all December holidays
See every observance across December in one monthly calendar.
December calendar →December 1 — quick answers
- How many holidays fall on December 1?
- In the 2026–2030 window, 4 holidays and observance fall on December 1: World AIDS Day, First Sunday of Advent, Giving Tuesday, Romania National Day.
- What is celebrated on December 1?
- December 1 is home to World AIDS Day, First Sunday of Advent, Giving Tuesday and other observances. Each one has its own page with history and a live countdown.
- Are any December 1 holidays public holidays?
- None of the observances on December 1 are US federal holidays; they are celebrated informally by people, brands and communities.