Go with the flow and use hh:mm:ss like everyone else?
If not, I would probably put the hours and minutes in separate cells, then
combine them with the formula =a1*100+b1, and display with the format
##":"##.##
Thanks Fred, I'll try that. Like you say, I can go with the hh:mm:ss but it
is much easier to do intermediate hand calculations in a decimal format.
This is for TSD rallying. Thanks again