Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
142,809 days
From Saturday, September 8, 1635 to Monday, September 7, 2026.
Monday–Friday weekdays102,006
Weeks and days20,401w 2d
Calendar span390 years, 11 months, 30 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.