Why does a hillshade light the land from the northwest at 45 degrees? Cartographers have used it since the 1950s because light from that direction stops ridges looking like valleys.

Why does a hillshade light the land from the northwest at 45 degrees? Cartographers have used it since the 1950s because light from that direction stops ridges looking like valleys.
Mean tells you how green an area is on average. Change one word to standard deviation and the same block tells you how mixed it is.
Loading aerial imagery in Earth Engine: filter by place first, then by date, then mosaic.
One word. Change mean to stdDev in a seventy line script and Earth Engine tells you something completely different about the same patch of ground.
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Every year, at least one person gets these the wrong way round and wonders why their study area is in the Indian Ocean.
In Google Earth Engine, a point is longitude first, then latitude.
Twenty minutes of pointing and clicking found three satellite scenes.
Every Sentinel-2 scene over this area for the last five years? I'm not clicking through that. I'm certainly not downloading it.