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AR sun & tree check
Point your phone around the property. You'll see where the sun is now and its path in summer, at the equinox and in winter. Then trace the treeline to get the times the sun goes behind the trees.
Needs camera, motion sensors and location. Works best on a phone, opened over HTTPS. On a desktop, drag to look around.
Drag the two dots onto the centre line of the trunk: one low, one high. The dashed line is true vertical.
Viewpoint height