Date facts
Monday, September 13, 1999
September 13, 1999 is day 256 of 365, in ISO week 37. There are 109 days left in 1999 after this date.
Weekday
Monday
Calendar weekday
Day of year
256
of 365
ISO week
37
Week-year 1999
Days remaining
109
In 1999
Weeks start on Monday and use ISO week numbers. Monday is week 37 of 1999.