import type { SunPositionResult } from "./types";
/**
 * Calculate sun position using NOAA formulas (0.833° atmospheric refraction).
 * Note: sunrise/sunset are null in polar regions (polar night/midnight sun).
 *
 * @param isoDateTime - ISO 8601 string with timezone (e.g., "2025-11-01T09:00:00+09:00")
 * @param latitude - Latitude in degrees (-90 to 90, + = North, - = South)
 * @param longitude - Longitude in degrees (-180 to 180, + = East, - = West)
 * @returns Sun position with times as ISO 8601 strings preserving timezone
 */
export declare const getSunPosition: (isoDateTime: string, latitude: number, longitude: number) => SunPositionResult;