import type { Coordinates } from "../../types";
export interface SolarPosition {
    declination: number;
    rightAscension: number;
    equationOfTime: number;
    julianDay: number;
}
export interface SolarTimes {
    transit: number;
    sunrise: number;
    sunset: number;
    afternoon: (shadowLength: number) => number;
    hourAngle: (angle: number, afterTransit: boolean) => number;
}
export interface HourAngleResult {
    angle: number;
    isValid: boolean;
    reason?: string;
}
export declare function calculateSolarPosition(date: Date, _coordinates: Coordinates): SolarPosition;
export declare function calculateSolarTransit(date: Date, coordinates: Coordinates): number;
export declare function calculateHourAngle(date: Date, coordinates: Coordinates, angle: number, elevation?: number): HourAngleResult;
export declare function calculateSunriseSunset(date: Date, coordinates: Coordinates, angle?: number, elevation?: number): {
    sunrise: number;
    sunset: number;
    isValid: boolean;
};
export declare function calculatePrayerTime(date: Date, coordinates: Coordinates, angle: number, afterTransit?: boolean, elevation?: number): number | null;
export declare function calculateAsrTime(date: Date, coordinates: Coordinates, shadowLength?: number, elevation?: number): number | null;
export declare function createSolarTimes(date: Date, coordinates: Coordinates, elevation?: number): SolarTimes;
export declare function calculateRefraction(elevation: number): number;
export declare function calculateSolarElevation(date: Date, coordinates: Coordinates, time: number): number;
export declare function calculateSolarAzimuth(date: Date, coordinates: Coordinates, time: number): number;
export declare function isSunAboveHorizon(date: Date, coordinates: Coordinates, time: number): boolean;
export declare function findSolarNoon(date: Date, coordinates: Coordinates): {
    time: number;
    elevation: number;
};
export declare function calculateDayLength(date: Date, coordinates: Coordinates, elevation?: number): number;
export declare function checkPolarConditions(date: Date, coordinates: Coordinates): {
    isPolarDay: boolean;
    isPolarNight: boolean;
    reason?: string;
};
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