The time after some time
Ruby - 131 115 107 97 84 bytes

I'm still golfing it.

h,m,s=gets.split(/\w/).map &amp;:to_i;$&gt;&lt;&lt;"#{(h+m/60+s/3600)%24}:#{(m+s/60)%60}:#{s%60}"


Thanks for @Doorknob for /\w/ inshead of /h|m|s/