It is 699,952 days from the start date to the end date, but not including the end date.
Or 1916 years, 4 months, 24 days excluding the end date.
Or 22996 months, 24 days excluding the end date.
60,475,852,800 seconds
1,007,930,880 minutes
16,798,848 hours
699,952 days
99,993 weeks and 1 day