Week 51, 2026
ISO-8601 Standard Week
Starts On
Monday
December 21, 2026
Ends On
Sunday
December 27, 2026
This week marks approximately 97% of the year 2026 passed.
December 2026 Calendar
| Week | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|---|
| 49 | 30 | 1 | 2 | 3 | 4 | 5 | 6 |
| 50 | 7 | 8 | 9 | 10 | 11 | 12 | 13 |
| 51 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| 52 | 21 | 22 | 23 | 24 | 25 | 26 | 27 |
| 53 | 28 | 29 | 30 | 31 | 1 | 2 | 3 |
Holidays in Week 51
All Weeks in 2026
Week 51 in Other Years
Compare dates and holidays for week 51 across different years:
About Week 51
Week 51 of 2026 is a standard business week consisting of 7 days. It follows the ISO-8601 convention where Monday is the first day of the week.
Working Days
In most countries, this week contains 5 working days (Monday, December 21 to Friday, December 25) and a standard 2-day weekend.