Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
17,914 days
From Wednesday, August 17, 1977 to Thursday, September 3, 2026.
Monday–Friday weekdays12,796
Weeks and days2,559w 1d
Calendar span49 years, 17 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.