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I'm trying to find equation for an amount of solar energy that given place (of some latitude) on Earth's surface receives during a given day. I know it can be derived by using basic geometry, but I just need it for some application and don't want to waste time and risk mistakes. So if you know, where I could find this, I would greatly appreciate a reference. Thanks in advance for any help.

Josef Ondrej

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# Amount of solar energy per day in a given location

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