Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
17,442 days
From Saturday, December 2, 1978 to Thursday, September 3, 2026.
Monday–Friday weekdays12,459
Weeks and days2,491w 5d
Calendar span47 years, 9 months, 1 day
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.