Rose McGowan Share this article... By Lynn Hayes|2017-05-07T11:02:21-04:00May 7th, 2017|2 Comments 2 Comments Jim May 8, 2017 at 10:54 am - Reply How is the BLM calculated? Lynn Hayes May 8, 2017 at 11:58 pm - Reply Jim, the position of the Black Moon Lilith is based on the relationship between the lunar orbit and the Sun and the earth’s position between them at the time of the lunar apogee, when the Moon is farthest from the Sun. The easiest way to calculate yours is at the astro.com site where you can obtain a free birthchart. Leave A Comment Cancel reply Comment Notify me of followup comments via e-mail Save my name, email, and website in this browser for the next time I comment. Notify me of new posts by email.