# File lib/ice_cube/validations/day_of_year.rb, line 32
      def validate(step_time, start_time)
        days_in_year = TimeUtil.days_in_year(step_time)
        yday = day < 0 ? day + days_in_year + 1 : day
        offset = yday - step_time.yday
        offset >= 0 ? offset : offset + days_in_year
      end