December 2025 calendar
31 days, starting on a Monday, with US holidays and ISO week numbers marked.
December 2025
| Wk | Sun | Mon | Tue | Wed | Thu | Fri | Sat |
|---|---|---|---|---|---|---|---|
| 48 | Sunday, 30 November 2025 | Monday, 1 December 2025 | Tuesday, 2 December 2025 | Wednesday, 3 December 2025 | Thursday, 4 December 2025 | Friday, 5 December 2025 | Saturday, 6 December 2025 |
| 49 | Sunday, 7 December 2025 | Monday, 8 December 2025 | Tuesday, 9 December 2025 | Wednesday, 10 December 2025 | Thursday, 11 December 2025 | Friday, 12 December 2025 | Saturday, 13 December 2025 |
| 50 | Sunday, 14 December 2025 | Monday, 15 December 2025 | Tuesday, 16 December 2025 | Wednesday, 17 December 2025 | Thursday, 18 December 2025 | Friday, 19 December 2025 | Saturday, 20 December 2025 |
| 51 | Sunday, 21 December 2025 | Monday, 22 December 2025 | Tuesday, 23 December 2025 | Wednesday, 24 December 2025 | Thursday, 25 December 2025 | Friday, 26 December 2025 | Saturday, 27 December 2025 |
| 52 | Sunday, 28 December 2025 | Monday, 29 December 2025 | Tuesday, 30 December 2025 | Wednesday, 31 December 2025 | Thursday, 1 January 2026 | Friday, 2 January 2026 | Saturday, 3 January 2026 |
Weeks start on Sunday. Open it in the calendar to start on Monday, add events or print.
- Days
- 31
- Weekdays
- 23
- Weekend days
- 8
- ISO weeks
- 49–1
- Starts on
- Monday
- Ends on
- Wednesday
- Christmas Eve Wednesday, 24 December 2025
- Christmas Thursday, 25 December 2025· federal
- Boxing Day (UK/CA/AU) Friday, 26 December 2025
- New Year's Eve Wednesday, 31 December 2025
December 2025 has 31 days. It opens on a Monday and closes on a Wednesday, so the grid above runs to 5 rows when the week starts on Sunday.
December 2025 has 4 holidays and observances: Christmas Eve (Wednesday, 24 December 2025), Christmas (Thursday, 25 December 2025), Boxing Day (UK/CA/AU) (Friday, 26 December 2025) and New Year's Eve (Wednesday, 31 December 2025).
The week numbers in the left-hand column are ISO 8601 weeks, the numbering most of Europe uses for planning and payroll. December 2025 covers weeks 49, 50, 51, 52 and 1.
To start the week on Monday, write events onto days or print a blank grid, open December 2025 in the calendar. Events you add stay in your browser.
What day does December 2025 start on?
December 2025 starts on a Monday and ends on Wednesday the 31st.
How many working days are in December 2025?
23 Monday-to-Friday days, and 8 weekend days. 1 US federal holiday falls on a weekday, so an office that closes for them is open 22 days. An office may also close on the observed day when a federal holiday falls at the weekend.
What holidays are in December 2025?
December 2025 has 4 holidays and observances: Christmas Eve (Wednesday, 24 December 2025), Christmas (Thursday, 25 December 2025), Boxing Day (UK/CA/AU) (Friday, 26 December 2025) and New Year's Eve (Wednesday, 31 December 2025).
What week numbers does December 2025 cover?
ISO weeks 49, 50, 51, 52 and 1. ISO weeks start on Monday, and week 1 is the week holding the year's first Thursday, so a month's first or last days can belong to a week numbered in the neighbouring year.