ISO WEEK
53
2026
December 28 – January 3, 2027
Week 53 of 53
100% through 2026
Days in Week 53
MonDecember 28
🌖 Waning Gibbous
TueDecember 29
🌖 Waning Gibbous
WedDecember 30
🌗 Last Quarter
ThuDecember 31
🌗 Last Quarter
FriJanuary 1
SatJanuary 2
SunJanuary 3
Moon Phases This Week
- 🌖 Waning Gibbous — Monday, December 28
- 🌖 Waning Gibbous — Tuesday, December 29
- 🌗 Last Quarter — Wednesday, December 30
- 🌗 Last Quarter — Thursday, December 31
FAQs
When does Week 53 2026 start and end?
Week 53 of 2026 starts on December 28 (Monday) and ends on January 3, 2027 (Sunday).
What month is Week 53 in?
Week 53 of 2026 is primarily in December. It spans two calendar months.
How many weeks are in 2026?
2026 has 53 ISO weeks. 2026 is a long year with 53 weeks.
