on May 21, 2016
I am working on a ritual for the next full moon (June 20th), which is Midsummer/Summer Solstice (also the best day to harvest mistletoes) and in the zodiac sign of Sagittarius. According to my research, the full moon will begin at 6:02 a.m. (my time Central). The zodiac sign is also in course of transition, because it enters Capricorn at 6:55 a.m..
I would assume that I would have to do my spell work a couple of days before if it corresponds with that particular zodiac.
My question is, would the exact time of the full moon be considered a moon void? Also, how could I calculate the time the zodiac signs actually begin to transition?