[SpikeG]

Astronomical conjunctions do indeed repeat themselves. When a planet moves to its closest point to the earth in its eliptical, it appears to slow,stop and then move in reverse. This phenomena is known as a retrograde planet. When it moves away from the earth again,it appears to,once again, slow, stop and then resume forward motion.

[Redcloak]

They don't repeat in a fashion that leads people to individual houses.