def time_f day
      start = start_time_f day
      finish = finish_time_f day
      if start == finish && start == ""
        # whole day
        ""
      elsif start == finish && start == "..."
        "..."
      else
        "#{start_time_f day} - #{finish_time_f day}"
      end
    end
def time_f day
      start = start_time_f day
      finish = finish_time_f day
      if start == finish && start == ""
        # whole day
        ""
      elsif start == finish && start == "..."
        "..."
      else
        "#{start_time_f day} - #{finish_time_f day}"
      end
    end
Time it finishes and or starts at day, or '...'