Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
144,991 days
From Monday, September 17, 1629 to Monday, September 7, 2026.
Monday–Friday weekdays103,565
Weeks and days20,713w 0d
Calendar span396 years, 11 months, 21 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.