Every yearDecember 15
Everything December 15 celebrates
6 national, international, and world observances are on the calendar for December 15 every year, and 2 more land on it in some years.
| # | Observance | Category | Actions |
|---|---|---|---|
| 01 | Bill of Rights DayLead | Celebration | |
| 02 | National Cupcake Day | Food | |
| 03 | International Tea Day | Food | |
| 04 | National Wear Your Pearls Day | Celebration | |
| 05 | Cat Herders' Day | Celebration | |
| 06 | International Jewish Book Day | Books |
These are set by a rule rather than a fixed date, so they only land on December 15 in some years.
National Wreaths Across America Day — 2029 and 2035
The Start of Ramadan — 2031
Born on December 15
Historic figures
- L. L. Zamenhof1859–1917Polish linguist and ophthalmologist, created Esperanto
- Henri Becquerel1852–1908French physicist and chemist, Nobel Prize laureate
- Gustave Eiffel1832–1923French architect and engineer, co-designed the Eiffel Tower
- Oscar Niemeyer1907–2012Brazilian architect
- Freeman Dyson1923–2020English-American physicist and mathematician
- Maurice Wilkins1916–2004New Zealand-English physicist and biologist, Nobel Prize laureate
- Niels Ryberg Finsen1860–1904Faroese-Danish physician and educator, Nobel Prize laureate
- J. Paul Getty1892–1976American-English businessman and art collector, founded Getty Oil
- Tim Conway1933–2019American comedian, actor, producer, and screenwriter
- Friedensreich Hundertwasser1928–2000Austrian-New Zealand painter and architect
Celebrities & public figures
- Don Johnsonb. 1949American actor
- Keylor Navasb. 1986Costa Rican footballer
- Adam Brodyb. 1979American actor
- Jesse Lingardb. 1992English footballer
- Charlie Coxb. 1982English actor
- Michelle Dockeryb. 1981English actress
- Oleksandr Zinchenkob. 1996Ukrainian footballer
- Lee Jung-jaeb. 1972South Korean actor
- Maude Apatowb. 1997American actress
- Michael Shanksb. 1970Canadian actor
Birth dates from Wikidata; names link to Wikipedia.
This page covers December 15 in any year. For one year in particular — the weekday, and which moveable observances landed on it — see December 15, 2026.
Today Celebrates tracks daily national, international and world observances all year.