I can't seem to find it in the help. How do I calculate time difference? We
have a network in/out board. I get a report of when I clocked in and out for
the day. I want to paste this into Excel and have it calculate how much time
I worked. It comes in as:

A1 07:38 AM
A2 10:55 AM
A3 12:01 AM
A4 16:43 PM

I want it to calculate A2-A1 and A4-A3. Please help