Patrick Confused By Shadows is my spirit animalhttps://twitter.com/patrickc/status/1138615790012370944 …
Was very confused by the shadows on the ground in Singapore yesterday until I realized that, below 23.50 of latitude, shadows in the northern hemisphere can (in the summer) move both clockwise *and* counterclockwise, depending on the time of day. 
(See http://andrewmarsh.com/apps/staging/sunpath3d.html ….)
(See http://andrewmarsh.com/apps/staging/sunpath3d.html ….)
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