If you webmail me from mister.red - start a conversation, better than here. I might need more detail, re what is meant by "time". I am sure I could help. If not in cell formulae then in a macro. Be sure to include Weasel-Excel in the subject and I will spot it.

PS if you look at some of my lists, even dances, they are produced (yes the HTML) in Excel with cells and macros. I recently needed to find the duration of mp3s and found VBA code that allowed me to construct lists for StroudVoices.co.uk with duration and pointing to the tracks. I rarely fail when asking on techie forums.

There is always someone who knows something you don't!