Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
148,183 days
From Monday, December 21, 1620 to Monday, September 7, 2026.
Monday–Friday weekdays105,845
Weeks and days21,169w 0d
Calendar span405 years, 8 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.