Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
21,824 days
From Sunday, December 4, 1966 to Friday, September 4, 2026.
Monday–Friday weekdays15,590
Weeks and days3,117w 5d
Calendar span59 years, 9 months
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.