Weekmark

Calendar week · ISO 8601

Week 17, 2025

Monday 21 April – Sunday 27 April 2025

  1. Mon21Apr
  2. Tue22Apr
  3. Wed23Apr
  4. Thu24Apr
  5. Fri25Apr
  6. Sat26Apr
  7. Sun27Apr
ISO week
2025-W17
Copy as
CW17 (21–27 Apr)
Quarter
Q2 2025
Weeks in 2025
52
US week number
17

Week 17 is also written KW 17 (Kalenderwoche) or CW 17. 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 21 Apr to Saturday 26 Apr the same number: week 17.