I remember reading this on this or another Excel group, and now can not find
it. Please help

Column A and B contain Start and End time.
Column C calculates elapsed time =B2-A2
=B3-A3
etc
The sum total elapsed time at bottom of Column C
What I can not remember is the custom format to use in column C so that if
the end time goes past midnight, it calculates correctly.
Thanks for repeating the answer for me.

Paul