When viewing a specific day on the monthly calendar,

Hello,
When viewing a specific day on the monthly calendar, the available and non-available times show up to the right of the month. A large amount of space is used to show unavailable time slots starting at 12:00 AM. This is kind of silly and looks bad. I would like to change the view to start at 8:00 AM.
The appointment page is here:
http://classesforwebdesign.com/make-an-appointment/
Thank you!
Emily