Weekmark

Calendar week · ISO 8601

Week 23, 2026

Monday 1 June – Sunday 7 June 2026

  1. Mon1Jun
  2. Tue2Jun
  3. Wed3Jun
  4. Thu4Jun
  5. Fri5Jun
  6. Sat6Jun
  7. Sun7Jun
ISO week
2026-W23
Copy as
CW23 (1–7 Jun)
Quarter
Q2 2026
Weeks in 2026
53
US week number
23

Week 23 is also written KW 23 (Kalenderwoche) or CW 23. 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 1 Jun to Saturday 6 Jun the same number: week 23.