Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
159,877 days
From Thursday, December 15, 1588 to Monday, September 7, 2026.
Monday–Friday weekdays114,197
Weeks and days22,839w 4d
Calendar span437 years, 8 months, 23 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.