Date facts
Tuesday, December 30, 1980
December 30, 1980 is day 365 of 366, in ISO week 1. There are 1 days left in 1980 after this date.
Weekday
Tuesday
Calendar weekday
Day of year
365
of 366
ISO week
1
Week-year 1981
Days remaining
1
In 1980
Weeks start on Monday and use ISO week numbers. Tuesday is the first week of 1981.