import { ChineseDate } from './lunar-calendar';
/**
 * @description GB/T 33661-2017 农历的编算和颁行
 * @link http://c.gb688.cn/bzgk/gb/showGb?type=online&hcno=E107EA4DE9725EDF819F33C60A44B296
 */
export declare class SolarTerm {
    label: string;
    date?: ChineseDate;
    readonly order: number;
    readonly longitude: number;
    constructor(order: number, label: string);
    toString: () => string;
    isMidTerm(): boolean;
    static create(index: number, lang?: Array<string> | ReadonlyArray<string>): SolarTerm;
}
export declare function create24SolarTerms(lang?: Array<string> | ReadonlyArray<string>): Map<number, SolarTerm>;
export declare function calcMoonEclipticLongitude(targetDate: Date, coordinate?: GeoJSON.Position): number;
export declare function calcSunEclipticLongitude(targetDate: Date, coordinate?: GeoJSON.Position): number;
export declare function calcDiffOfSunAndMoon(time: Date, coordinate?: GeoJSON.Position): number;
export declare function getTermOnDay(date: Date, coordinate?: GeoJSON.Position): SolarTerm | null;
export declare function countSolarTerms(fromDate: Date, toDate: Date, coordinate?: GeoJSON.Position): Array<SolarTerm>;
/**
 * This method will countSolarTerms with params that are the first date and the latest date of the year.
 */
export declare function getTermsOnYear(year: number, coordinate?: GeoJSON.Position): Array<SolarTerm>;