# File lib/active_support/core_ext/date/calculations.rb, line 188
        def end_of_month
          last_day = ::Time.days_in_month( self.month, self.year )
          self.acts_like?(:time) ? change(:day => last_day, :hour => 23, :min => 59, :sec => 59) : change(:day => last_day)
        end