Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
163,404 days
From Friday, April 20, 1579 to Monday, September 7, 2026.
Monday–Friday weekdays116,716
Weeks and days23,343w 3d
Calendar span447 years, 4 months, 18 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.