def sec_to_time(sec) t = Hash.new a_sec = sec.divmod(60) s = a_sec[1] a_min = a_sec[0].divmod(60) m = a_min[1] a_h = a_min[0].divmod(24) h = a_h[1] t["secondes"],t["minutes"],t["heures"]= s,m,h return t end def time_to_sec(t) sec = t["secondes"] + (t["minutes"] * 60) + (t["heures"] * 60 * 60) return sec end I have a time in second and a Hash with seconds minutes and hours. I'm sure you have some pretty tricks 2008-06-11T21:21:49+00:00 317 Ruby time-to-second-second-to-time 2 2008-06-11T23:42:48+00:00 637 >> start = Time.at 0 => Wed Dec 31 19:00:00 -0500 1969 >> later = start + 60 * 60 * 2 + 60 * 3 + 1 # add 2 hours, 3 minutes and 1 second => Wed Dec 31 21:01:01 -0500 1969 >> later.hour - start.hour => 2 >> later.min - start.min => 3 >> later.sec - start.sec => 1 317 Why not just use Time ? 2008-06-11T21:44:20+00:00 10292 Ruby 4 1 3 danielharan http://danielharan.com/ 317 I got a "xx:xx:xx", I add some second to it and then write it back. So I don't found Time very usefull. a atime.hms could be nice I use this piece of code to modify a .srt to syncronise it with a video when it needs the knife :) 2008-06-11T23:42:46+00:00 10302 Ruby 0 0 637 kyzh