Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
149,402 days
From Sunday, August 20, 1617 to Monday, September 7, 2026.
Monday–Friday weekdays106,716
Weeks and days21,343w 1d
Calendar span409 years, 18 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.