Week 21, 2026
ISO-8601 Standard Week
Week 21 of 2026 runs from May 25, 2026 to May 31, 2026, and 2026 has 53 weeks in total.
This week is already in the past. See the full 2026 calendar, or learn why some years have 53 weeks.
Starts On
Monday
May 25, 2026
Ends On
Sunday
May 31, 2026
This week marks approximately 40% of the year 2026 passed.
May 2026 Calendar
| Week | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|---|
| 18 | 27 | 28 | 29 | 30 | 1 | 2 | 3 |
| 19 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 20 | 11 | 12 | 13 | 14 | 15 | 16 | 17 |
| 21 | 18 | 19 | 20 | 21 | 22 | 23 | 24 |
| 22 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
Holidays in Week 21
All Weeks in 2026
Week 21 in Other Years
Compare dates and holidays for week 21 across different years:
About Week 21
Week 21 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, May 25 to Friday, May 29) and a standard 2-day weekend.