Week 18, 2026
ISO-8601 Standard Week
Week 18 of 2026 runs from May 4, 2026 to May 10, 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 04, 2026
Ends On
Sunday
May 10, 2026
This week marks approximately 34% 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 18
All Weeks in 2026
Week 18 in Other Years
Compare dates and holidays for week 18 across different years:
About Week 18
Week 18 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 04 to Friday, May 08) and a standard 2-day weekend.