begin
  require "parsedate"
  $haveparsedate = true
rescue LoadError
  require "time"
  $haveparsedate = false
end

fst = File.stat("ChangeLog")
p fst.mtime.utc

if $haveparsedate
  x = Time.utc(*ParseDate.parsedate("#{fst.mtime.utc}"))
else
  x = Time.parse("#{fst.mtime.utc}")
end

p x
p fst.mtime.utc == x