I'd recomend to use DateTime fields, Datetime arithmetic with VFP is pretty cool.
>What is the best way to do calculations with time?
>I have a time sheet to do where the users enter the time started such as 8:30 and the end time such as 13:20.
>Should I use a character field for entry formated 99:99 or is a datetime better?
>Are there pre existing functions to do the calculations?