September 11th will be the 24th anniversary of 911

 

From and including: Tuesday, September 11, 2001
To, but not including Thursday, September 11, 2025

Result: 8766 days

It is 8766 days from the start date to the end date, but not including the end date.

Or 24 years excluding the end date.

Or 288 months excluding the end date.