Week 20, 2026

1. Mon11May
2. Tue12May
3. Wed13May
4. Thu14May
5. Fri15May
6. Sat16May
7. Sun17May

ISO week

2026-W20

Copy as

CW20 (11–17 May)

Quarter

Q2 2026

Weeks in 2026

53

US week number

20

Week 20 is also written KW 20 (Kalenderwoche) or CW 20. ISO weeks start on Monday, and week 1 is the week with the year’s first Thursday. US calendars start weeks on Sunday and count the week with 1 January as week 1, so they give Monday 11 May to Saturday 16 May the same number: week 20.