# File lib/validates_timeliness/formats.rb, line 256
      def full_hour(hour, meridian)
        hour = hour.to_i
        return hour if meridian.nil?
        if meridian.delete('.').downcase == 'am'
          raise if hour == 0 || hour > 12
          hour == 12 ? 0 : hour
        else
          hour == 12 ? hour : hour + 12
        end
      end