Magic Forums

I am needing to clarify a few things about drawing a pentagram on the ground for the divine banishing spell found here on SoP. It calls for a 9 foot pentagram that the points of it are nine feet from the center of it. This would be an eighteen foot pentagram using my logic and was wondering if the directions have a typo and the pentagram should actually be nine feet from point to opposite side of pentagram? Or four and a half feet from center out to each tip of a point? Also I would like to know which direction the top point should be? North, south, east, west or maybe a general direction of (??) ? When is the best time of day and part of the month to draw a floor pentagram? Any other useful suggestions for drawing the pentagram that would help propogate success in rituals are much appreciated too.