Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
24,381 days
From Friday, December 4, 1959 to Friday, September 4, 2026.
Monday–Friday weekdays17,415
Weeks and days3,483w 0d
Calendar span66 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.