# File lib/validates_timeliness/formats.rb, line 267
      def unambiguous_year(year)
        if year.length <= 2
          century = Time.now.year.to_s[0..1].to_i
          century -= 1 if year.to_i >= ambiguous_year_threshold
          year = "#{century}#{year.rjust(2,'0')}"
        end
        year.to_i
      end