n7uv...@gmail.com schrieb am Donnerstag, 2. Mai 2024 um 01:01:52 UTC+2:

When I hear "sunshine duration", I'm not sure whether that means the 
duration that the scary fiery (I live in PHX %^) ball of plasma is at and 
above the horizon (which is already provided under the Celestial tab) 
[image: Screenshot 2024-05-01 155959.png]
or something about the total energy delivered to a square meter of the 
ground over the period of a day. 


Sunshine duration means the time the sun is really seen in the sky and 
typically casts a shadow. The standard instrument to measure sunshine 
duration is the Campbell-Stokes sunshine recorder 
<https://en.wikipedia.org/wiki/Sunshine_recorder>. 

Sunshine duration is *not* total daylight time.

If a cloud is situated before the sun, this is considered no sunshine. If 
clouds are elsewhere in the sky it does not matter.

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