Steve,

If the elapsed time is less than 24 hours, this is even easier than the other suggestions:

? left( ttoc( {^2002-01-01 00:00:00} + (datetime() - hospital.newdate), 2 ), 5 )

If it can span days then you can tweak it a little.

>Here's is my calculation for elapsed time. I subtract current time from start time to get elapsed time and show it as HH:MM in a listbox.
>
>Hours and minutes are off if
>Start Time is 09:50:00 and Current Time is 14:20:00. HH:MM is wrong.
>But if
>Start Time is 10:10:00 and Current Time is 14:20:00, HH:MM is right.
>
>Following is my code. What am I doing wrong? I am missing something. Thanks for your assistance. I am starting to spin my wheels on the back-half of the calculation. Thanks again.