A sundial on the equator has a horizontal gnomon (oriented north-south), and the shadows move underneath it from west to east. (There is of course a slight cur

A sundial on the equator has a horizontal gnomon (oriented north-south), and the shadows move underneath it from west to east. (There is of course a slight curve in one direction or the other based on the seasons.) See e.g. https://en.wikipedia.org/wiki/Sundial#/media/File:Sundial,_Singapore_Botanic_Gardens.jpg https://en.wikipedia.org/wiki/Sundial#/media/File:Sundial,_S...