Time travelling in style - got any garbage?

time_travel_by_delorean.rb

class Delorean
  # set_coodinates
  # ==============
  #
  # ## REQUIRES:
  #
  # - abbr_time => "07:30"
  #
  # ## RETURNS:
  # An instance of Delorean.
  #
  def self.set_coordinates(abbr_time)
    new(abbr_time)
  end

  # next_occurence
  # ==============
  #
  # ## RETURNS:
  # The next occurence of the time the instance of Delorean
  # was instantiated with.
  #
  # ### FORMAT
  # ActiveSupport::TimeWithZone
  #
  # ## EXAMPLES
  #
  # ```
  # delorean = Delorean.new("20:30")
  # delorean.next_occurance
  # # => Tue, 01 Apr 2014 20:30:00 UTC +00:00
  # ```
  #
  def next_occurence
    next_lightning_strike + seconds_offset
  end

  private

  attr_reader :hours, :minutes
  def initialize(lcd_display)
    h,m = lcd_display.split(':')
    @hours = h.to_i
    @minutes = m.to_i
  end

  def next_lightning_strike
    Time.zone.now.tomorrow.midnight
  end

  def seconds_offset
    hours_in_seconds + minutes_in_seconds
  end

  def minutes_in_seconds
    60 * minutes
  end

  def hours_in_seconds
    60 * 60 * hours
  end
end

Delorean.set_coordinates("05:45").next_occurence
# => 2014-03-28 05:45:00 +0000