December 2026 at a glance
December 2026 has 31 days. It starts on a Tuesday and ends on a Thursday, with 23 weekdays and 8 weekend days (4 Saturdays and 4 Sundays). It covers ISO weeks 49 to 53, and days 335 to 365 of the year.
Week by week
Week 49 runs from Mon, Nov 30 to Sun, Dec 6; week 50 from Mon, Dec 7 to Sun, Dec 13; week 51 from Mon, Dec 14 to Sun, Dec 20; week 52 from Mon, Dec 21 to Sun, Dec 27; week 53 from Mon, Dec 28 to Sun, Jan 3. By the end of December, 365 days of 2026 have gone by (100%) and 0 remain. December is part of the fourth quarter (Q4), which has 62 working days in all.
Holidays in December 2026
- Friday, December 25: Christmas Day
Counting Monday to Friday, December 2026 has 22 working days: 23 weekdays minus 1 federal holiday on a weekday. It brings a long weekend thanks to Christmas Day (Friday, December 25).
Other dates to know: Christmas Eve (Thursday, December 24) and New Year’s Eve (Thursday, December 31).
Moon, seasons and clocks
Moon phases in Eastern Time: last quarter on Tuesday, December 1 at 1:09 AM, new moon on Tuesday, December 8 at 7:52 PM, first quarter on Thursday, December 17 at 12:43 AM, full moon on Wednesday, December 23 at 8:28 PM and last quarter on Wednesday, December 30 at 2:00 PM. The full moon of December 23 is traditionally called the Cold Moon. The December solstice falls on Monday, December 21 at 3:50 PM Eastern Time (20:50 UTC): the shortest day of the year north of the equator.
| Key date | Day |
|---|---|
| Last quarter | Tue, Dec 1 |
| New moon | Tue, Dec 8 |
| First quarter | Thu, Dec 17 |
| December solstice | Mon, Dec 21 |
| Full moon (Cold Moon) | Wed, Dec 23 |
| Christmas Eve | Thu, Dec 24 |
| Christmas Day (federal holiday) | Fri, Dec 25 |
| Last quarter | Wed, Dec 30 |
| New Year’s Eve | Thu, Dec 31 |
About December
December, from decem, ten, closes the year with the December solstice, the shortest day in the Northern Hemisphere, and with Christmas on the 25th. Hanukkah often falls in December too, on dates set by the Hebrew calendar.
November 2026 · January 2027 · 2026 calendar · US holidays 2026 · week number today · moon calendar for December 2026