# File lib/ice_cube/time_util.rb, line 194
    def self.which_occurrence_in_month(time, wday)
      first_occurrence = ((7 - Time.utc(time.year, time.month, 1).wday) + time.wday) % 7 + 1
      this_weekday_in_month_count = ((days_in_month(time) - first_occurrence + 1) / 7.0).ceil
      nth_occurrence_of_weekday = (time.mday - first_occurrence) / 7 + 1
      [nth_occurrence_of_weekday, this_weekday_in_month_count]
    end