ISO WEEK
39
2025
September 22 – September 28, 2025
Week 39 of 52
75% through 2025
Days in Week 39
MonSeptember 22
🌑 New Moon
TueSeptember 23
🌑 New Moon
WedSeptember 24
🌑 New Moon
ThuSeptember 25
🌒 Waxing Crescent
FriSeptember 26
🌒 Waxing Crescent
SatSeptember 27
🌒 Waxing Crescent
SunSeptember 28
🌓 First Quarter
Moon Phases This Week
- 🌑 New Moon — Monday, September 22
- 🌑 New Moon — Tuesday, September 23
- 🌑 New Moon — Wednesday, September 24
- 🌒 Waxing Crescent — Thursday, September 25
- 🌒 Waxing Crescent — Friday, September 26
- 🌒 Waxing Crescent — Saturday, September 27
- 🌓 First Quarter — Sunday, September 28
FAQs
When does Week 39 2025 start and end?
Week 39 of 2025 starts on September 22 (Monday) and ends on September 28, 2025 (Sunday).
What month is Week 39 in?
Week 39 of 2025 is primarily in September.
How many weeks are in 2025?
2025 has 52 ISO weeks. Most years have 52 weeks.
