STM32, Keil + first steps in astrology?

u know how to make Keil working with STM32 Value Line Discovery board from ST.com
Boards can by

also the example must use the mode or algoritm for make an digital clock that regonize the time clock in function of the sunset and sunrise ? In her internet i have found many products, but any information or table of sunset sunrise in function of latatude

send example codes for STM32.

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