How many days until December 21?
90 days
December 21 next falls on Monday, December 21, 2026. Counted from today, Tuesday, September 22, 2026, US Eastern Time.
- Falls on a
- Monday
- In weeks
- 12 weeks
- ISO week
- Week 52
- Weekend?
- No, a weekday
December 21 in the years ahead
| Year | Date | Days away |
|---|---|---|
| 2026 | Monday | 90 |
| 2027 | Tuesday | 455 |
| 2028 | Thursday | 821 |
| 2029 | Friday | 1,186 |
| 2030 | Saturday | 1,551 |
| 2031 | Sunday | 1,916 |
December 2026
| ISO week | Sun | Mon | Tue | Wed | Thu | Fri | Sat |
|---|---|---|---|---|---|---|---|
| 49 | |||||||
| 50 | |||||||
| 51 | |||||||
| 52 | 90 days | ||||||
| 53 |
About the countdown to December 21
There are 90 days between today and December 21, which next falls on Monday, December 21, 2026 — the 21st day of December and the 355th day of 2026. That is 12 full weeks and 6 days.
December 21 falls on a Monday in 2026. Because a common year is 365 days, or 52 weeks and one day, the weekday advances by one each year and by two across a leap year — so December 21 will be a Tuesday in 2027.
Other ways this is asked
- How many days till December 21?
- 90 days.
- How many more days until December 21?
- 90 days from today, Tuesday, September 22, 2026.
- What day of the week is December 21?
- Monday, in 2026.
- How many weeks until December 21?
- 12 weeks and 6 days.