I am struggling! Ive been working with SAS for a few weeks now, learning new stuff every day and it feels great. I'm stuck at the moment. I have two columns of datetimes (format datetime16.) And I want to subtract the second column from the first to calculate the cycle time between both of them in hh:mm format (the cycle time range is very large... ie. ranging from zero minutes to 2000 hours or larger) I can't for the life understand what the best method to do this. I have 275,000 rows of data. ... View more