photo from Thomas Ku the UTM coordinates in photo are just for reference The vertical field of view is ~ 13.5 deg, which is 200mm equivalent for Full Frame camera wider view: 1. get co-ordinates of east and west tower east tower (Tsing Yi Tower) 22.352942, 114.080527 west tower (Ma Wan Tower) 22.349350, 114.067620 fwd 253.346286° bck 73.341378° dist between towers 1387.725 metres height of towers: 206 m distance between towers : 1377 m height of sun at west tower : 152 + (191-152)/2 = 171.5 m height of sun at east tower: 107 + (152-107)/2 = 129.5 m delta h : 42 m atan(42/1377)= 1.747 deg ( 3.5 deg max) where to take photo: loc1: (22.354160, 114.088753) loc2: 22.354442 N 114.086452 E height: (~170m???) should be around 103 m, to < 148m dist to west tower: (from google map measure tool) Loc1 : 2250 m Loc2: 2014 m in 2021: loc1: 31 Oct 17:35 next occurrence ( 2 times ...