February 9th

 Twit will be 777 weeks old on 2/9

Parkland will be 156 weeks old

Twit will be 777 weeks old on 2/9

From and including: Wednesday, February 14, 2018

To, but not including Wednesday, February 10, 2021

Result: 1092 days

It is 1092 days from the start date to the end date, but not including the end date.

Or 2 years, 11 months, 27 days excluding the end date.

Or 35 months, 27 days excluding the end date

156 weeks

299.18% of a common year (365 days)