From and including: Sunday, June 9, 2019
To, but not including Sunday, August 11, 2019 (9th Av)

Result: 63 days
It is 63 days from the start date to the end date, but not including the end date.

Or 2 months, 2 days excluding the end date.

Alternative time units
63 days can be converted to one of these units:

5,443,200 seconds
90,720 minutes
1512 hours
63 days
9 weeks