Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
142,820 days
From Tuesday, August 28, 1635 to Monday, September 7, 2026.
Monday–Friday weekdays102,014
Weeks and days20,402w 6d
Calendar span391 years, 10 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.