Week 19, 2025

1. Mon5May
2. Tue6May
3. Wed7May
4. Thu8May
5. Fri9May
6. Sat10May
7. Sun11May

ISO week

2025-W19

Copy as

CW19 (5–11 May)

Quarter

Q2 2025

Weeks in 2025

52

US week number

19

Week 19 is also written KW 19 (Kalenderwoche) or CW 19. 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 5 May to Saturday 10 May the same number: week 19.