Proponents of a 'religion' known as Thelema founded by English occultist, writer and generally nasty human being Aleister Crowley celebrate his life on this day.
Known as the "feast for the life of Aleister Crowley" it celebrates the giver of "the law" said to be given to him from an entity named Aiwass which subsequently became the foundation of this so-called religion and philosophy of his creation called Thelema.
Now, while he has proponents thoughout the world claiming he is a seer and posessing extraordinary paranormal abilities and powers; the sum total of my readings have lead me to believe he is mostly just a pervert with some of the nastiest proclivities I've ever had described in writing and I could never be his acolyte nor hold him in any level of esteem ... much less reverence.
I consider any notion of following his teachings as some misguided set of pseudoreligious 'tenets' utterly abhorrent.
But it's (mostly) a free world and if you're one of those who follow Thelema hold Aleister Crowley in some semblance of respect and/or admiration by all means go for it.
I, on the other hand, choose to ignore the day by and large having discharged my duty to bring what I feel to be the works of an utter charlatan to light.