Week 15 of the year
When is week 15? The exact Monday–Sunday dates of ISO week 15 for every year from 2024 to 2032.
Week 15 of 2026 runs from Monday, Apr 6, 2026 to Sunday, Apr 12, 2026 (April). Week 15 of 2026 has already passed (14 weeks ago). ISO week code: 2026-W15.
Week 15 dates by year
| Year | Week 15 starts (Mon) | Week 15 ends (Sun) | Month |
|---|---|---|---|
| 2024 | Monday, April 8, 2024 | Sunday, April 14, 2024 | April |
| 2025 | Monday, April 7, 2025 | Sunday, April 13, 2025 | April |
| 2026 | Monday, April 6, 2026 | Sunday, April 12, 2026 | April |
| 2027 | Monday, April 12, 2027 | Sunday, April 18, 2027 | April |
| 2028 | Monday, April 10, 2028 | Sunday, April 16, 2028 | April |
| 2029 | Monday, April 9, 2029 | Sunday, April 15, 2029 | April |
| 2030 | Monday, April 8, 2030 | Sunday, April 14, 2030 | April |
| 2031 | Monday, April 7, 2031 | Sunday, April 13, 2031 | April |
| 2032 | Monday, April 5, 2032 | Sunday, April 11, 2032 | April |
All weeks
Frequently asked questions
What month is week 15 in?
Week 15 typically falls in April. The exact dates shift by up to a few days from year to year because week 1 is anchored to January 4, not January 1.
How do I write week 15 as a week code?
The ISO code is the year plus W15 — for example 2026-W15, short form 26W15, or YYWW date code 2615. See week number formats.
Are these dates the same in every country?
Yes for ISO 8601 (Monday-start) numbering, which is what this table shows. US Sunday-start calendars can label the same days with a number one higher — see week start conventions.