 "Equinox" is Delany's preferred title, but the book was originally released under the title The Tides of Lust, a compromise with the publisher, Lancer Books, who wanted to call it "Tides of Eros".In 1975 a translation into the French came out, published by Champ Libre as Vice Versa.The book was first published in the UK in 1980 by Savoy Books of Manchester.