Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
179,229 days
From Monday, December 23, 1535 to Tuesday, September 8, 2026.
Monday–Friday weekdays128,021
Weeks and days25,604w 1d
Calendar span490 years, 8 months, 16 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.