Date facts
Tuesday, December 30, 2025
December 30, 2025 is day 364 of 365, in ISO week 1. There are 1 days left in 2025 after this date.
Weekday
Tuesday
Calendar weekday
Day of year
364
of 365
ISO week
1
Week-year 2026
Days remaining
1
In 2025
Weeks start on Monday and use ISO week numbers. Tuesday is the first week of 2026.