Week 31, 2026
July 27 – August 2, 2026
Monday July 27 – Sunday August 22026-W31Days 208–214
The seven days
| Date | ISO week date | Day of year | US week | Islamic date (computed) | Holidays and other dates |
|---|---|---|---|---|---|
| Mon, Jul 27 | 2026-W31-1 | 208 | 31 | 13 Safar 1448 AH | |
| Tue, Jul 28 | 2026-W31-2 | 209 | 31 | 14 Safar 1448 AH | |
| Wed, Jul 29 | 2026-W31-3 | 210 | 31 | 15 Safar 1448 AH | |
| Thu, Jul 30 | 2026-W31-4 | 211 | 31 | 16 Safar 1448 AH | |
| Fri, Jul 31 | 2026-W31-5 | 212 | 31 | 17 Safar 1448 AH | |
| Sat, Aug 1 | 2026-W31-6 | 213 | 31 | 18 Safar 1448 AH | |
| Sun, Aug 2 | 2026-W31-7 | 214 | 32 | 19 Safar 1448 AH |
About week 31
The week spans two months: it starts in July and ends in August, with August 1 on Saturday. In US numbering, where weeks start on Sunday and the week of January 1 is week 1, Monday to Saturday are US week 31 and Sunday US week 32.
None of the 17 national holiday sets we cover has a public holiday in this week; regional holidays are on the country pages. All weeks of 2026 lists the neighbouring weeks.
Week 31 in other years
| Year | Week 31 runs |
|---|---|
| 2024 | Mon, Jul 29 – Sun, Aug 4 |
| 2025 | Mon, Jul 28 – Sun, Aug 3 |
| 2026 | Mon, Jul 27 – Sun, Aug 2 |
| 2027 | Mon, Aug 2 – Sun, Aug 8 |
| 2028 | Mon, Jul 31 – Sun, Aug 6 |
| 2029 | Mon, Jul 30 – Sun, Aug 5 |
In 2027, week 31 runs Mon, Aug 2 – Sun, Aug 8: 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 31 falls between July 26 and August 2.
By the end of week 31, 214 days of 2026 have passed (58.6% of the year), and 22 ISO weeks of 2026 remain. The week falls in Q3.
Writing week 31
ISO 8601 writes this week as 2026-W31 (basic format 2026W31), from 2026-W31-1 on Monday to -7 on Sunday. The week number page shows the spreadsheet and Python formulas that give these numbers.