How many days until December 21?
There are 172 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.
171
Days
09
Hours
50
Mins
11
Secs
Counting down to December 21
December 21 birthday facts
Falls on
Monday, 2026
Zodiac sign
Sagittarius
Birthstone
Turquoise
Birth flower
Narcissus
Half-birthday
June 21
Days to go
172 days
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.
Quick answers
- How many days until December 21?
- There are 172 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.