Week 25, 2027
June 21–27, 2027
Monday June 21 – Sunday June 272027-W25Days 172–178
The seven days
| Date | ISO week date | Day of year | US week | Islamic date (computed) | Holidays and other dates |
|---|---|---|---|---|---|
| Mon, Jun 21 | 2027-W25-1 | 172 | 26 | 16 Muharram 1449 AH | |
| Tue, Jun 22 | 2027-W25-2 | 173 | 26 | 17 Muharram 1449 AH | |
| Wed, Jun 23 | 2027-W25-3 | 174 | 26 | 18 Muharram 1449 AH | |
| Thu, Jun 24 | 2027-W25-4 | 175 | 26 | 19 Muharram 1449 AH | |
| Fri, Jun 25 | 2027-W25-5 | 176 | 26 | 20 Muharram 1449 AH | Matariki (New Zealand) |
| Sat, Jun 26 | 2027-W25-6 | 177 | 26 | 21 Muharram 1449 AH | |
| Sun, Jun 27 | 2027-W25-7 | 178 | 27 | 22 Muharram 1449 AH |
About week 25
In US numbering, where weeks start on Sunday and the week of January 1 is week 1, Monday to Saturday are US week 26 and Sunday US week 27.
Holidays this week: Matariki on Fri, Jun 25 in New Zealand. The June solstice is on Mon, Jun 21 at 14:11 UTC. All weeks of 2027 lists the neighbouring weeks.
Week 25 in other years
| Year | Week 25 runs |
|---|---|
| 2025 | Mon, Jun 16 – Sun, Jun 22 |
| 2026 | Mon, Jun 15 – Sun, Jun 21 |
| 2027 | Mon, Jun 21 – Sun, Jun 27 |
| 2028 | Mon, Jun 19 – Sun, Jun 25 |
| 2029 | Mon, Jun 18 – Sun, Jun 24 |
| 2030 | Mon, Jun 17 – Sun, Jun 23 |
In 2028, week 25 runs Mon, Jun 19 – Sun, Jun 25: 364 days later, 2 days earlier in the calendar. Over the 400-year cycle, the Monday of week 25 falls between June 14 and June 21.
By the end of week 25, 178 days of 2027 have passed (48.8% of the year), and 27 ISO weeks of 2027 remain. The week falls in Q2.
Writing week 25
ISO 8601 writes this week as 2027-W25 (basic format 2027W25), from 2027-W25-1 on Monday to -7 on Sunday. The week number page shows the spreadsheet and Python formulas that give these numbers.