Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
187,279 days
From Monday, December 8, 1513 to Tuesday, September 8, 2026.
Monday–Friday weekdays133,771
Weeks and days26,754w 1d
Calendar span512 years, 9 months
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.