ISO week calendar
Week 29 2026
ISO week 29 of 2026 runs from Monday, July 13, 2026 to Sunday, July 19, 2026.
Date Time Encyclopedia answer, with calculation details and assumptions below.
ISO weeks start on Monday and end on Sunday. Week 1 is the week containing the first Thursday of the ISO week-numbering year.
Snapshot
Week 29 2026
ISO week 29 of 2026 runs from Monday, July 13, 2026 to Sunday, July 19, 2026.
ISO weeks start on Monday and end on Sunday. Week 1 is the week containing the first Thursday of the ISO week-numbering year.
- Week starts
- Monday, July 13, 2026
- Week ends
- Sunday, July 19, 2026
- ISO year
- 2026
- Weeks in ISO year
- 53
ISO week 29, 2026
- MonJul 13, 2026Week start
- TueJul 14, 20262026-W29
- WedJul 15, 20262026-W29
- ThuJul 16, 20262026-W29
- FriJul 17, 20262026-W29
- SatJul 18, 20262026-W29
- SunJul 19, 2026Week end
Method
Find the Monday of ISO week 1, then add seven days for each week after it.
ISO week context
Week 29 2026 uses the ISO week-date system: weeks start Monday, end Sunday, and week 1 is tied to the first Thursday of the ISO year.
Compare nearby ISO weeks
Adjacent week pages help verify handoffs between reporting periods, sprints, payroll periods, and weekly plans.
Related Lookups
FAQ
When does this ISO week start?
Week 29 of 2026 starts on Monday, July 13, 2026.
When does this ISO week end?
Week 29 of 2026 ends on Sunday, July 19, 2026.