The answer to the question is undoubtedly the East, but where in relation to the place you are standing, and exactly when will it peek over the hills — and what about the moon? An application for your phone can help a plein air painter on the road know all this in advance. The app, which works on iPhone, Android phones, and in Internet browsers, is called The Photographer’s Ephemeris. It takes into consideration factors such as altitude and elevation. It’s free.
Visit the website here to see its many capabilities.