Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
163,387 days
From Monday, May 7, 1579 to Monday, September 7, 2026.
Monday–Friday weekdays116,705
Weeks and days23,341w 0d
Calendar span447 years, 4 months
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.