How many days until December 21?
December 21, 2026 falls on a Monday. That's 82 days from today, or 11 weeks and 5 days. The countdown below updates live for your time zone.
until Monday, December 21, 2026
82d 00h 00m 00s
Counting from Wednesday, September 30, 2026, in your time zone.
*Business days count Monday–Friday from tomorrow through the target date and skip U.S. federal holidays (observed dates).
About December 21, 2026
- Day of the week
- Monday
- Day of the year
- 355th of 365
- Days left in 2026 after it
- 10
- ISO week number
- Week 52
- Quarter
- Q4
- Season (Northern Hemisphere)
- Winter
- Zodiac sign
- Sagittarius
- December birthstone
- Turquoise
Holidays and observances on December 21: Winter .
The last December 21 was Sunday, December 21, 2025, 283 days ago.
December 21 in the coming years
| Date | Day of the week | Days from today |
|---|---|---|
| December 21, 2026 | Monday | 82 |
| December 21, 2027 | Tuesday | 447 |
| December 21, 2028 | Thursday | 813 |
| December 21, 2029 | Friday | 1,178 |
| December 21, 2030 | Saturday | 1,543 |
| December 21, 2031 | Sunday | 1,908 |
Frequently asked questions
How many days until December 21?
There are 82 days until December 21, 2026, counting from Wednesday, September 30, 2026.
What day of the week is December 21, 2026?
December 21, 2026 is a Monday.
How many weeks until December 21?
December 21 is 11 weeks and 5 days away (82 days).
How many months until December 21?
December 21 is 2 months and 21 days away.
How many business days until December 21?
There are 58 weekdays (Monday–Friday) between tomorrow and December 21, 2026, or 55 business days if you skip U.S. federal holidays.
How many hours until December 21?
About 1,968 hours, counting from midnight today. The live counter above shows the exact hours, minutes and seconds left for your time zone.
How many days has it been since December 21?
The last December 21 was Sunday, December 21, 2025, 283 days ago.