Hi,
Sure, right now there is a hook in the code to modify that time slots array.
e. g.
apply_filters( ‘geodir_event_schedule_times’ , $event_time_array);
You can hook ur function to modify time slot array.
To make it easy i will provide an option in backend to choose time format.
Either Am/PM or 24 hrs format in near future.
Thanks for ur all inquires.