Week 1, 2026
ISO-8601 Standard Week
Starts On
Monday
January 05, 2026
Ends On
Sunday
January 11, 2026
This week marks approximately 1% of the year 2026 passed.
January 2026 Calendar
| Week | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|---|
| 1 | 29 | 30 | 31 | 1 | 2 | 3 | 4 |
| 2 | 5 | 6 | 7 | 8 | 9 | 10 | 11 |
| 3 | 12 | 13 | 14 | 15 | 16 | 17 | 18 |
| 4 | 19 | 20 | 21 | 22 | 23 | 24 | 25 |
| 5 | 26 | 27 | 28 | 29 | 30 | 31 | 1 |
Holidays in Week 1
All Weeks in 2026
Week 1 in Other Years
Compare dates and holidays for week 1 across different years:
About Week 1
Week 1 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, January 05 to Friday, January 09) and a standard 2-day weekend.