Find out sunrise time from longitude and latitude [closed]

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Is it possible to find out sunrise time for a given Longit开发者_开发问答ude and Latitude value in Objective-C?

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Try the Sunrise/Sunset Algorithm here:
http://edwilliams.org/sunrise_sunset_algorithm.htm

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Some source codes: Tools and Sources of Sunrise/Sunset Computation, including C and C++ which you can integrate with Objective-C

And here is a implementation in Objective-C!