Working days in December 2027
December 2027 has 21 working days in the United States: 23 weekdays minus 2 federal holidays, Christmas Day on Friday 24 December and New Year's Day (2028) on Friday 31 December. At 8 hours a day that is 168 working hours. The month runs from Wednesday 1 December to Friday 31 December: 31 days, 23 weekdays and 8 weekend days.
- Working days
- 21
- Working hours
- 168
- Weekdays
- 23
- Weekend days
- 8
- Federal holidays
- 2
- Calendar days
- 31
- First working day
- Wednesday 1 December
- Last working day
- Thursday 30 December
Calendar for December 2027
| Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | ||
| 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 13 | 14 | 15 | 16 | 17 | 18 | 19 |
| 20 | 21 | 22 | 23 | 24 | 25 | 26 |
| 27 | 28 | 29 | 30 | 31 |
- Weekend
- Federal holiday
The month opens on a Wednesday, so Wednesday 1 December is also its first working day. It ends on Friday 31 December, a federal holiday, so the last working day is Thursday 30 December. December 2027 has five Wednesdays, five Thursdays and five Fridays, and four of every other day: 4 Mondays to start a week on and 5 Fridays to finish one. It covers days 335 to 365 of the year and ISO weeks 48 to 52.
Working days in each week of December 2027
Weeks run Monday to Sunday and carry their ISO week number. Only the days inside December are counted, so a week the month shares with November or the month after shows just its share.
| Week | Dates | Working days | Note |
|---|---|---|---|
| Week 48 | 1 to 5 December | 3 | Part week, the month starts mid-week |
| Week 49 | 6 to 12 December | 5 | Full week, no holiday |
| Week 50 | 13 to 19 December | 5 | Full week, no holiday |
| Week 51 | 20 to 26 December | 4 | Christmas Day |
| Week 52 | 27 to 31 December | 4 | New Year's Day (2028) |
How the working days in December 2027 are counted
Two federal holidays fall in December 2027: Christmas Day on Friday 24 December 2027 and New Year's Day (2028) on Friday 31 December 2027. Together they take two weekdays out of the count, leaving 21 working days from 23 weekdays. 25 December 2027 is a Saturday, so Friday 24 December is the holiday for most federal employees, under the rule in 5 U.S.C. 6103(b) that moves a Saturday holiday to the Friday before and, by executive order, a Sunday holiday to the Monday after. 1 January 2028 is a Saturday, so Friday 31 December 2027 is the holiday for most federal employees, under the rule in 5 U.S.C. 6103(b) that moves a Saturday holiday to the Friday before and, by executive order, a Sunday holiday to the Monday after.
The rule is the same on every page here: count Monday to Friday, then take off any federal holiday that lands on one of those days. The holiday dates are the ones the US Office of Personnel Management publishes for federal pay and leave. State holidays, religious holidays and company closures are not included, and other countries have different lists entirely, so treat 21 as the federal baseline for December 2027 and adjust it for your own calendar.
December 2027 next to the months around it
December 2027 has 21 working days, one day more than November 2027 (20). A 31-day month has 21, 22 or 23 weekdays depending on the day it starts on, and a Wednesday start gives this one the full 23, and the holiday count settles the final figure.
December is the third month of the fourth quarter. Q4 2027 has 61 working days in total: October 20, November 20 and December 21. That is 488 working hours for the quarter at 8 hours a day, out of 1,992 for the whole of 2027.
Count working days in December 2027 with your own holidays
Open the business days calculator with December 2027 filled in, with the federal holiday dates already in the holiday box. Add your state or company holidays, or take out the federal ones that your employer does not observe, and the count updates as you type. The calculator can also count from a date in the middle of the month, or find the date a set number of working days ahead, which is how most deadlines are written.
Questions people ask
How many working days are in December 2027?
21. December 2027 has 23 weekdays (Monday to Friday) and 2 federal holidays on a weekday, Christmas Day on Friday 24 December and New Year's Day (2028) on Friday 31 December, which leaves 21. Weekends, 8 days this month, are not working days.
How many working hours are in December 2027?
168 hours at 8 hours a day: 21 working days times 8. On a 7.5 hour day it is 157.5 hours, and a 40 hour week over 23 weekdays with no holidays would be 184 hours.
Is there a federal holiday in December 2027?
Yes, two: Christmas Day on Friday 24 December 2027 and New Year's Day (2028) on Friday 31 December 2027. The date is the one OPM lists for federal pay and leave, which moves a holiday that lands on a weekend to the nearest weekday.
What are the first and last working days of December 2027?
The first working day is Wednesday 1 December 2027. The last working day is Thursday 30 December 2027, because Friday 31 December is a federal holiday.
How many weekends are in December 2027?
8 weekend days: 4 Saturdays and 4 Sundays. Eight is the fewest a month can have, so most of the month is working time.