Repo created

libs/base/sunrise_sunset.hpp

@@ -0,0 +1,22 @@
+#pragma once
+
+#include <ctime>
+#include <string>
+
+enum class DayTimeType
+{
+  Day,
+  Night,
+  PolarDay,
+  PolarNight
+};
+
+std::string DebugPrint(DayTimeType type);
+
+/// Helpers which calculates 'is day time' without a time calculation error.
+/// @param timeUtc - utc time
+/// @param latitude - latutude, -90...+90 degrees
+/// @param longitude - longitude, -180...+180 degrees
+/// @returns day time type for a specified date for a specified location
+/// @note throws RootException if gmtime returns nullptr
+DayTimeType GetDayTime(time_t timeUtc, double latitude, double longitude);