Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
145,565 days
From Monday, February 21, 1628 to Monday, September 7, 2026.
Monday–Friday weekdays103,975
Weeks and days20,795w 0d
Calendar span398 years, 6 months, 17 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.