def time_distance(time_1, time_2):
    """ Compute the time distance between two timestamps, where time1 > time2.

    :param time_1: datetime timestamp.
    :param time_2: datetime timestamp.
    :return: time difference in hrs.
    """
    difference = time_1 - time_2
    # total seconds (int)
    total_seconds = difference.total_seconds()
    # convert from seconds to hrs.
    return total_seconds / (60 * 60)