Date facts
Monday, January 4, 2021
January 4, 2021 is day 4 of 365, in ISO week 1. There are 361 days left in 2021 after this date.
Weekday
Monday
Calendar weekday
Day of year
4
of 365
ISO week
1
Week-year 2021
Days remaining
361
In 2021
Weeks start on Monday and use ISO week numbers. Monday is the first week of 2021.