How it's counted
Days are counted from today to the date, not including today. Midnight at the start of the day is the target, which is why the live countdown can show one day less than the calendar count late in the evening.
December 21 by year
| Year | Date | Day | From today |
|---|---|---|---|
| 2025 | December 21 | Sunday | 288 days ago |
| 2026 | December 21 | Monday | 77 days |
| 2027 | December 21 | Tuesday | 442 days |
| 2028 | December 21 | Thursday | 808 days |
| 2029 | December 21 | Friday | 1,173 days |
| 2030 | December 21 | Saturday | 1,538 days |
| 2031 | December 21 | Sunday | 1,903 days |
Frequently asked questions
How many days until December 21?
77 days, counting from today.
How many weeks until December 21?
11.0 weeks, or 11 weeks and 0 days.
How many months until December 21?
2 months and 16 days.
What day of the week is it?
December 21 is on a Monday (Monday, December 21, 2026).