class Chronic::RepeaterDay

def next(pointer)
  super
  if !@current_day_start
    @current_day_start = Chronic.time_class.local(@now.year, @now.month, @now.day)
  end
  direction = pointer == :future ? 1 : -1
  @current_day_start += direction * DAY_SECONDS
  Span.new(@current_day_start, @current_day_start + DAY_SECONDS)
end