If I want to add in the day for instances that run over would I have to combine date/time field and do calculation or is there a way I could calculate separately and then concatenate? Thanks

Thanks!  That work perfectly!  My scripting is limited and had already tried multiple codes.Brandi

I need the below to include seconds in the output field.  I have looked everywhere and I'm sure simple.  Please help.if (HasValue(startsamplingtime) and HasValue(endsamplingtime)) thenvar TimeDiff = (Time2Num(endsamplingtime.formattedValue, "HH:MM:SS") - Time2Num(startsamplingtime.formattedValue, "H...