Saturn's calendar in Scorpio The moon in the scorpion is the astronomical phenomenon of the moon passing through the constellation Constellation (scorpion) or along the scorpion constellation, which occurs once every lunar month and usually takes two to three days. In ancient astronomy mixed with some religious beliefs, the phenomenon of the moon in the scorpion was considered to be an ominous event. Religious texts in the Islamic texts during the moon on the scorpion should avoid or pay alms