How many days until December 21?
There are 120 days until December 21, 2026, which lands on a Monday. Watch it tick down live, and share the countdown with everyone who should be counting too.
Counting down to December 21
December 21 birthday facts
Born on December 21? That makes you a Sagittarius — adventurous, honest and allergic to boredom. Your birthstone is the turquoise, your birth flower is the narcissus, and your half-birthday lands on June 21 — worth celebrating too. See everything about being born in December, get the full picture with the birthday personality tool, or work out your exact age with the age calculator.
Famous birthdays on December 21
Anyone celebrating a December 21 birthday is in famous company — these are the best-known people born on this exact date:
- Samuel L. Jackson (1948) — Pulp Fiction star
- Jane Fonda (1937) — Oscar-winning actress and activist
- Frank Zappa (1940) — avant-garde rock legend
- Kiefer Sutherland (1966) — 24 star
December 21 is also Winter Solstice, so a birthday on this date shares the calendar with a celebration the whole world already knows.
What makes a December 21 birthday special
December 21 is the 355th day of the year, which means a December 21 birthday arrives with 10 days of the year still to go. It falls on the 30th day of Sagittarius season — adventurous, honest and allergic to boredom. December 25 is among the rarest birthdays in the U.S. — while late December babies are famously overrepresented among pro athletes thanks to school-year age cutoffs.
What day of the week is December 21?
| Year | December 21 falls on |
|---|---|
| 2026 | Monday |
| 2027 | Tuesday |
| 2028 | Thursday |
| 2029 | Friday |
| 2030 | Saturday |
Quick answers
- How many days until December 21?
- There are 120 days until December 21, 2026. It falls on a Monday.
- What zodiac sign is December 21?
- People born on December 21 are Sagittarius — typically adventurous, honest and allergic to boredom.
- What are the birthstone and birth flower for December 21?
- The December birthstone is Turquoise and the birth flower is the Narcissus.
- Which famous people were born on December 21?
- Famous December 21 birthdays include Samuel L. Jackson, Jane Fonda, Frank Zappa, Kiefer Sutherland.