endsAtDate attribute defined in Event Models is buggy

[kushthedude]

Describe the bug

My event start and end date were June 27,2019 and June 30,2019 respectively
Data stored in startsAtDate and endsAtDate were 6/27/2019 and 07/01/2019 respectively

To Reproduce

Steps to reproduce the behaviour:

Check the event.endsAtDate it would give a result greater than one day .

Expected behaviour

Find the cause of the bug and Fix it.