Weekmark

Calendar week · ISO 8601

Week 9, 2025

Monday 24 February – Sunday 2 March 2025

  1. Mon24Feb
  2. Tue25Feb
  3. Wed26Feb
  4. Thu27Feb
  5. Fri28Feb
  6. Sat1Mar
  7. Sun2Mar
ISO week
2025-W09
Copy as
CW9 (24 Feb – 2 Mar)
Quarter
Q1 2025
Weeks in 2025
52
US week number
9

Week 9 is also written KW 9 (Kalenderwoche) or CW 9. 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 24 Feb to Saturday 1 Mar the same number: week 9.