Week 15, 2026
April 6–12, 2026
Monday April 6 – Sunday April 122026-W15Days 96–102
The seven days
| Date | ISO week date | Day of year | US week | Islamic date (computed) | Holidays and other dates |
|---|---|---|---|---|---|
| Mon, Apr 6 | 2026-W15-1 | 096 | 15 | 18 Shawwal 1447 AH | Easter Monday (9 sets); Family Day (South Africa); Ching Ming Festival (substitute day) (Hong Kong) |
| Tue, Apr 7 | 2026-W15-2 | 097 | 15 | 19 Shawwal 1447 AH | Easter Monday (substitute day) (Hong Kong) |
| Wed, Apr 8 | 2026-W15-3 | 098 | 15 | 20 Shawwal 1447 AH | |
| Thu, Apr 9 | 2026-W15-4 | 099 | 15 | 21 Shawwal 1447 AH | |
| Fri, Apr 10 | 2026-W15-5 | 100 | 15 | 22 Shawwal 1447 AH | |
| Sat, Apr 11 | 2026-W15-6 | 101 | 15 | 23 Shawwal 1447 AH | |
| Sun, Apr 12 | 2026-W15-7 | 102 | 16 | 24 Shawwal 1447 AH |
About week 15
In US numbering, where weeks start on Sunday and the week of January 1 is week 1, Monday to Saturday are US week 15 and Sunday US week 16.
Holidays this week: Easter Monday on Mon, Apr 6 in 9 of the countries and regions we cover; Family Day on Mon, Apr 6 in South Africa; Ching Ming Festival (substitute day) on Mon, Apr 6 in Hong Kong; Easter Monday (substitute day) on Tue, Apr 7 in Hong Kong. All weeks of 2026 lists the neighbouring weeks.
Week 15 in other years
| Year | Week 15 runs |
|---|---|
| 2024 | Mon, Apr 8 – Sun, Apr 14 |
| 2025 | Mon, Apr 7 – Sun, Apr 13 |
| 2026 | Mon, Apr 6 – Sun, Apr 12 |
| 2027 | Mon, Apr 12 – Sun, Apr 18 |
| 2028 | Mon, Apr 10 – Sun, Apr 16 |
| 2029 | Mon, Apr 9 – Sun, Apr 15 |
In 2027, week 15 runs Mon, Apr 12 – Sun, Apr 18: 2026 has 53 weeks, so the same number comes 371 days later, 6 days later in the calendar. Over the 400-year cycle, the Monday of week 15 falls between April 5 and April 12.
By the end of week 15, 102 days of 2026 have passed (27.9% of the year), and 38 ISO weeks of 2026 remain. The week falls in Q2.
Writing week 15
ISO 8601 writes this week as 2026-W15 (basic format 2026W15), from 2026-W15-1 on Monday to -7 on Sunday. The week number page shows the spreadsheet and Python formulas that give these numbers.