So I created a schedule database and have Date/Time field along with other details of the event.

The time part is not behaving well at all.

For instance I will put 12/15/2019 at 6:30pm and it shows 1:30pm when I go to the record. FYI I'm on the USA Eastern timezone.

I have tried changing the settings to "Manually select a timezone" and "Use the viewing member's timezone" with nothing changing. I have even tried to edit the record and still nothing changes. 

Are you using 4.4.9? There was a bug in 4.4.8 that may cause this behavior.