William Lilly, English astrologer (died 1681)

William Lilly was a seventeenth century English astrologer. He is described as having been a genius at something "that modern mainstream opinion has since decided cannot be done at all" having developed his stature as the most important astrologer in England through his social and political connections as well as going on to have an indelible impact on the future course of Western astrological tradition.

May 1 is the 121st day of the year in the Gregorian calendar; 244 days remain until the end of the year.