export declare function julianDate(date: Date): number;
export declare function julianYear(date: Date): number;
export declare function earthRotationAngle(julianDateUt1: number): number;
export declare function greenwichMeanSiderealTime(julianDateUt1: number, julianDateTt?: number): number;
export declare function localMeanSiderealTime(date: Date, longitudeDegreesEast: number, dut1Seconds?: number, ttMinusUtcSeconds?: number): number;
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