Date facts
Friday, January 4, 1980
January 4, 1980 is day 4 of 366, in ISO week 1. There are 362 days left in 1980 after this date.
Weekday
Friday
Calendar weekday
Day of year
4
of 366
ISO week
1
Week-year 1980
Days remaining
362
In 1980
Weeks start on Monday and use ISO week numbers. Friday is the first week of 1980.