default start & end times in calendar event editor

[eJM]

The calendar events editor starts up with a default date, but not a default time. I find myself adding dozens of events and most begin at 8AM and end at 5PM. I was hoping I could set a default somewhere. Too often I forget to put a time in and the dang thing won't let me post the event without one.

Can I edit a template or file to do this?

Thanks,

Jim