I hate to disturb the dead, but your sky model is pretty impressive, and more importantly works almost perfectly with the now built in “Sun Position” addon. I say almost because for some reason the “Sun” in the skybox only moves along the y axis, whereas the… bright sky spot actually follows the intended path. Pretty odd.
By default they line up perfectly, so something in the sun position add on must be interfering somehow… Also maybe you didn’t want to give away your whole node setup, but the stars aren’t working either, which is kind of sad.