The Quindecile, 165°, an aspect of the 24th Harmonic. Perhaps the most notable observation about this aspect of Compulsion and Obsession, is that those who advocate its use are quite fanatical about its value in the natal chart, dynamics and synastry. I really did not need another aspect, but I did stop and look, and to this point I have enjoyed the view. This lecture serves as an introduction to the Quindecile, with some background on harmonics and quick way to find the aspect using your computer program. Example charts of the famous and the not-so-famous show that compulsion and obsession exist at many different levels and not all are negative. The Warning is you may just get hooked!