Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
146,101 days
From Thursday, September 3, 1626 to Monday, September 7, 2026.
Monday–Friday weekdays104,357
Weeks and days20,871w 4d
Calendar span400 years, 4 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.