Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
149,644 days
From Wednesday, December 21, 1616 to Monday, September 7, 2026.
Monday–Friday weekdays106,888
Weeks and days21,377w 5d
Calendar span409 years, 8 months, 17 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.