# File lib/ri_cal/core_extensions/time/calculations.rb, line 16
        def days_in_month
          raw = [0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31][self.month]
          self.month == 2 && leap_year? ? raw + 1 : raw
        end