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