Weekmark

Calendar week · ISO 8601

Week 15, 2025

Monday 7 April – Sunday 13 April 2025

  1. Mon7Apr
  2. Tue8Apr
  3. Wed9Apr
  4. Thu10Apr
  5. Fri11Apr
  6. Sat12Apr
  7. Sun13Apr
ISO week
2025-W15
Copy as
CW15 (7–13 Apr)
Quarter
Q2 2025
Weeks in 2025
52
US week number
15

Week 15 is also written KW 15 (Kalenderwoche) or CW 15. 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 7 Apr to Saturday 12 Apr the same number: week 15.