Midnight and beyond! Appointments+

So my new issue is being able to set the time to be anything other than ending at 11:45pm or 11:59 pm

My wordpress installation is set to 12 hour clock so I do not have any miltary time options.

I would like to make my work schedule from 4pm to 2am the next day and have all the available time slots display on the same page like they do now, but all I gat and can see in times always end at 11:45 or 11:59pm.

No matter what I do with work hours settings.

Please tell me there is a way... Thanks!