ISO week 2026-W22

Week 22, 2026

Monday, May 25 – Sunday, May 31, 2026

ISO week 22 of 2026 (2026-W22) runs from Monday, May 25, 2026 to Sunday, May 31, 2026.

This week ended 20 weeks ago. The current week is week 42, 2026.

The 7 days of week 22

Dates in week 22, 2026
Day	Date	Day of year	US week	ISO date
Monday	May 25, 2026	145 of 365	22	2026-W22-1
Tuesday	May 26, 2026	146 of 365	22	2026-W22-2
Wednesday	May 27, 2026	147 of 365	22	2026-W22-3
Thursday	May 28, 2026	148 of 365	22	2026-W22-4
Friday	May 29, 2026	149 of 365	22	2026-W22-5
Saturday	May 30, 2026	150 of 365	22	2026-W22-6
Sunday	May 31, 2026	151 of 365	23	2026-W22-7

Week 22 at a glance

ISO code: 2026-W22 (Monday is 2026-W22-1, Sunday is 2026-W22-7)
Month: May
Quarter: Q2 of 2026
Day of year: Days 145–151 of 365
US week number: Monday–Saturday: US week 22; Sunday: US week 23 (Sunday-start weeks, week 1 contains January 1)
Even or odd: Week 22 is an even week
Weeks left: After this week, 31 ISO weeks remain in 2026 (53 weeks in total)
Year progress: By Sunday, 41% of 2026 has passed

Holidays and key dates

Monday, May 25: Memorial Day – US federal holiday

Week numbers follow ISO 8601: weeks start on Monday and week 1 contains the first Thursday of the year. US weeks start on Sunday, with week 1 containing January 1.

Questions about week 22, 2026

What are the dates of week 22 in 2026?

Week 22 of 2026 starts on Monday, May 25, 2026 and ends on Sunday, May 31, 2026.

What month is week 22 of 2026?

Week 22 falls in May. By the Thursday rule that ISO 8601 uses for years and quarters, it counts as a May week.

How do I get week 22 of 2026 in Excel or Google Sheets?

=ISOWEEKNUM(DATE(2026,5,25)) returns 22. To go the other way, =DATE(2026,1,4)-WEEKDAY(DATE(2026,1,4),2)+1+(22-1)*7 returns the Monday, May 25, 2026.