# File lib/crono/period.rb, line 33
    def description
      desc = "every #{@period.inspect}"
      desc += " between #{@interval.from} and #{@interval.to} UTC" if @interval
      desc += format(' at %.2i:%.2i', @at_hour, @at_min) if @at_hour && @at_min
      desc += " on #{DAYS[@on].capitalize}" if @on
      desc
    end