December 2025 Calendar
December 2025 starts on a Monday and has 31 days, 23 weekdays and 22 workdays after 1 US federal holiday.
Federal holiday Observance Today
| Wk | Sun | Mon | Tue | Wed | Thu | Fri | Sat |
|---|---|---|---|---|---|---|---|
| 49 | 1 | 2 | 3 | 4Full moon | 5 | 6 | |
| 50 | 7 | 8 | 9 | 10 | 11Last quarter | 12 | 13 |
| 51 | 14 | 15 | 16 | 17 | 18 | 19New moon | 20 |
| 52 | 21 | 22 | 23 | 24Christmas Eve | 25Christmas Day | 26 | 27First quarter |
| 1 | 28 | 29 | 30 | 31New Year's Eve |
Holidays and observances in December 2025
| Date | Holiday | Type |
|---|---|---|
| Wednesday, December 24 | Christmas Eve | Observance |
| Thursday, December 25 | Christmas Day | Federal holiday |
| Wednesday, December 31 | New Year's Eve | Observance |
Moon phases in December 2025
| Phase | Date and time (Eastern Time) |
|---|---|
| Full moon | Thursday, December 4, 6:14 PM EST |
| Last quarter | Thursday, December 11, 3:52 PM EST |
| New moon | Friday, December 19, 8:43 PM EST |
| First quarter | Saturday, December 27, 2:10 PM EST |
December 2025 at a glance
- Days
- 31
- Weekdays
- 23
- Weekend days
- 8
- Workdays (minus federal holidays)
- 22
- First day
- Monday
- Last day
- Wednesday
- ISO weeks
- 49 to 1
The December solstice (first day of winter) in the Northern Hemisphere is on Sunday, December 21, 10:03 AM EST. See all season dates.
More calendars
Questions
How many days are in December 2025?
December 2025 has 31 days: 23 weekdays and 8 weekend days.
How many workdays are in December 2025?
22 workdays, counting Monday to Friday and leaving out 1 federal holiday.
What day does December 2025 start on?
December 2025 starts on a Monday and ends on a Wednesday.