How many days until December 21?
82 days until December 21, 2026
Monday, December 21, 2026
That's 11 weeks and 5 days.
––days
––hours
––minutes
––seconds
until December 21 begins, in your time zone
Counted from today, Wednesday, September 30, 2026, in your time zone. The target day is included; today is not. Holiday dates follow the official rules — see our sources.
Every way to count
- Days
- 82 days
- Weeks
- 11 weeks and 5 days
- Months
- 2 months, 21 days
- Weekends
- 12 weekends
- Business days
- 58 days
- 55 without US federal holidays
- Sleeps
- 82 sleeps
About December 21, 2026
- It is a Monday.
- Day 355 of 365, in ISO week 52 of 2026 and quarter Q4.
- On this date: Winter.
| Wk | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|---|
| 49 | 1 | 2 | 3 | 4 | 5 | 6 | |
| 50 | 7 | 8 | 9 | 10 | 11 | 12 | 13 |
| 51 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| 52 | 21 | 22 | 23 | 24 | 25 | 26 | 27 |
| 53 | 28 | 29 | 30 | 31 |
Public holidays on December 21, 2026 around the world
1 country or territory has a nationwide public holiday on December 21, 2026:
- São Tomé Day — Sao Tome and Principe
Count in other units
- Days until
- Weeks until
- Months until
Nearby dates
This date elsewhere
Frequently asked questions
How many days until December 21?
82 days until Monday, December 21, 2026.
What day of the week is December 21, 2026?
It's a Monday.
How many weeks is that?
11 weeks and 5 days.
How many business days until December 21?
58 business days (Monday to Friday), or 55 business days without US federal holidays.