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george7378

How to calculate sunrise and sunset times yourself

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Hi everyone,

I recently made a tutorial which (hopefully) encompasses everything you need to know about manually calculating sunrise and sunset times yourself. It is available as a walk-through tutorial with mathematical functions explained here:

How to calculate sunrise and sunset times

I also turned it into a C++ program which provides sunrise and sunset times (in UTC, with the option of DST) in case you want to check the answers, and also basic ephemerides for the Sun. It only takes about 200 lines of code to implement this algorithm yourself, so you could use this tutorial to make your own program too.

http://gkastro.0sites.org/Sunriseset.exe

The link above might not always be available, so if you find it dead, please contact me if you want the program.

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