Week 23, 2026
June 1–7, 2026
Monday June 1 – Sunday June 72026-W23Days 152–158
The seven days
| Date | ISO week date | Day of year | US week | Islamic date (computed) | Holidays and other dates |
|---|---|---|---|---|---|
| Mon, Jun 1 | 2026-W23-1 | 152 | 23 | 15 Dhu al-Hijjah 1447 AH | Western Australia Day (Australia: Western Australia); June Bank Holiday (Ireland); King's Birthday (New Zealand); Vesak Day (substitute day) (Singapore) |
| Tue, Jun 2 | 2026-W23-2 | 153 | 23 | 16 Dhu al-Hijjah 1447 AH | |
| Wed, Jun 3 | 2026-W23-3 | 154 | 23 | 17 Dhu al-Hijjah 1447 AH | |
| Thu, Jun 4 | 2026-W23-4 | 155 | 23 | 18 Dhu al-Hijjah 1447 AH | |
| Fri, Jun 5 | 2026-W23-5 | 156 | 23 | 19 Dhu al-Hijjah 1447 AH | |
| Sat, Jun 6 | 2026-W23-6 | 157 | 23 | 20 Dhu al-Hijjah 1447 AH | |
| Sun, Jun 7 | 2026-W23-7 | 158 | 24 | 21 Dhu al-Hijjah 1447 AH |
About week 23
In US numbering, where weeks start on Sunday and the week of January 1 is week 1, Monday to Saturday are US week 23 and Sunday US week 24.
Holidays this week: Western Australia Day on Mon, Jun 1 in Australia: Western Australia; June Bank Holiday on Mon, Jun 1 in Ireland; King's Birthday on Mon, Jun 1 in New Zealand; Vesak Day (substitute day) on Mon, Jun 1 in Singapore. All weeks of 2026 lists the neighbouring weeks.
Week 23 in other years
| Year | Week 23 runs |
|---|---|
| 2024 | Mon, Jun 3 – Sun, Jun 9 |
| 2025 | Mon, Jun 2 – Sun, Jun 8 |
| 2026 | Mon, Jun 1 – Sun, Jun 7 |
| 2027 | Mon, Jun 7 – Sun, Jun 13 |
| 2028 | Mon, Jun 5 – Sun, Jun 11 |
| 2029 | Mon, Jun 4 – Sun, Jun 10 |
In 2027, week 23 runs Mon, Jun 7 – Sun, Jun 13: 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 23 falls between May 31 and June 7.
By the end of week 23, 158 days of 2026 have passed (43.3% of the year), and 30 ISO weeks of 2026 remain. The week falls in Q2.
Writing week 23
ISO 8601 writes this week as 2026-W23 (basic format 2026W23), from 2026-W23-1 on Monday to -7 on Sunday. The week number page shows the spreadsheet and Python formulas that give these numbers.