I subtract the following 2 times to get a time interval which works except when midnight rolls around and my Timea becomes less than my Timeb so Timec ends up negative.

timea - timeb = timec

Timea Char 8 For example hh:mm:ss
Timeb Char 8 For example hh:mm:ss
Timec Char 8 For example hh:mm:ss

For example:
14:30:00 - 13:15:00 = 01:15:00 or 1 hour and 15 minutes

But what if Timea is after midnight?
01:30:00 - 23:15:00 = 01:45:00 or 1 hour and 45 minutes

Is there a nice and easy calculation for this? I convert the Chars to Values and multiply by each to get everything into seconds and then do my subtractions, but midnight messes up my calculations. Any ideas would be appreciated. Thanks for the help.