Karkaqueen, If the moon is with a court card then that is usually the timing.
Not sure if the devil is associated with a sign. I was thinking Scorpio. When the moon is in Scorpio I was thinking more like devil as endings ( full moon ).
High priestess - intuitive woman ( water - Scorpio a deep sign) there is a moon by her feet on the card.
Devil - endings 8th house ( not sure)
Moon - full moon or new moon.
As with every full moon it ends one thing so a new can begin.
Just my thoughts I could be way off.