export default Astronomy;
/**
 * Astronomy Utility Class
 * Provides essential astronomical calculations for sun and moon positions,
 * and various angular conversions commonly used in prayer time calculations.
 */
declare class Astronomy {
    /**
     * Converts degrees to radians.
     * @param {number} degrees
     * @returns {number}
     */
    static toRadians(degrees: number): number;
    /**
     * Converts radians to degrees.
     * @param {number} radians
     * @returns {number}
     */
    static toDegrees(radians: number): number;
    /**
     * Normalizes an angle to the [0, 360) range.
     * @param {number} angle
     * @returns {number}
     */
    static normalizeAngle(angle: number): number;
    /**
     * Normalizes hours to the [0, 24) range.
     * @param {number} hours
     * @returns {number}
     */
    static normalizeHour(hours: number): number;
    /**
     * Calculates the Julian date for a given date.
     * @param {number} year
     * @param {number} month
     * @param {number} day
     * @returns {number}
     */
    static julianDate(year: number, month: number, day: number): number;
    /**
     * Calculates the sun’s mean anomaly.
     * @param {number} daysSinceJ2000
     * @returns {number} Mean anomaly in degrees
     */
    static sunMeanAnomaly(daysSinceJ2000: number): number;
    /**
     * Calculates the sun’s equation of center.
     * @param {number} M - Mean anomaly in degrees
     * @returns {number}
     */
    static sunEquationOfCenter(M: number): number;
    /**
     * Calculates the sun’s ecliptic longitude.
     * @param {number} M - Mean anomaly
     * @param {number} C - Equation of center
     * @returns {number}
     */
    static sunEclipticLongitude(M: number, C: number): number;
    /**
     * Calculates the sun’s declination.
     * @param {number} L - Ecliptic longitude in degrees
     * @returns {number} Declination in degrees
     */
    static sunDeclination(L: number): number;
    /**
     * Calculates the equation of time (difference between solar and clock time).
     * @param {number} M - Mean anomaly
     * @param {number} L - Ecliptic longitude
     * @returns {number} Equation of time in hours
     */
    static equationOfTime(M: number, L: number): number;
    /**
     * Calculates the hour angle for a given altitude and declination.
     * @param {number} latitude
     * @param {number} declination
     * @param {number} altitude - Sun altitude in degrees
     * @returns {number} Hour angle in degrees
     */
    static hourAngle(latitude: number, declination: number, altitude: number): number;
    /**
     * Calculates solar transit (solar noon).
     * @param {number} longitude
     * @param {number} equationOfTime
     * @returns {number} Solar noon in fractional hours (0–24)
     */
    static solarNoon(longitude: number, equationOfTime: number): number;
    /**
     * Calculates sunrise or sunset time.
     * @param {number} solarNoon
     * @param {number} hourAngle
     * @param {boolean} isSunrise - true for sunrise, false for sunset
     * @returns {number} Time in fractional hours (0–24)
     */
    static sunEventTime(solarNoon: number, hourAngle: number, isSunrise?: boolean): number;
}