A clock in a dream often makes time pressure visible -- a deadline, an aging process, or an urgency you've been feeling but haven't put into words. A clock running backward or stuck can reflect a wish to slow down or reclaim a moment you feel is slipping past you.
Superiour Planets because they most resist, they do not easily receive a detriment or assistance from the Inferiour Planets. - William Lilly (1602.-1681.)