94 lines
2.3 KiB
TypeScript
94 lines
2.3 KiB
TypeScript
/**
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Converts a Gregorian date to Jalali.
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*/
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export declare function toJalali(
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gy: number,
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gm: number,
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gd: number,
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): {
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jy: number;
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jm: number;
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jd: number;
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};
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/**
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Converts a Jalali date to Gregorian.
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*/
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export declare function toGregorian(
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jy: number,
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jm: number,
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jd: number,
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): {
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gy: number;
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gm: number;
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gd: number;
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};
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/**
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Is this a leap year or not?
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*/
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export declare function isLeapJalaliYear(jy: number): boolean;
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/**
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* Is this a leap year or not?
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*/
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export declare function isLeapGregorianYear(gy: number): boolean;
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/**
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Converts a date of the Jalali calendar to the Julian Day number.
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@param jy Jalali year (1 to ...)
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@param jm Jalali month (1 to 12)
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@param jd Jalali day (1 to 29/31)
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@return Julian Day number
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*/
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export declare function j2d(jy: number, jm: number, jd: number): number;
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/**
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Converts the Julian Day number to a date in the Jalali calendar.
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@param julianDay Julian Day number
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@return
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jy: Jalali year (1 to ...)
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jm: Jalali month (1 to 12)
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jd: Jalali day (1 to 29/31)
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*/
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export declare function d2j(julianDay: number): {
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jy: number;
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jm: number;
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jd: number;
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};
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/**
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Calculates the Julian Day number from Gregorian or Julian
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calendar dates. This integer number corresponds to the noon of
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the date (i.e. 12 hours of Universal Time).
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The procedure was tested to be good since 1 March, -100100 (of both
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calendars) up to a few million years into the future.
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@param gy Calendar year (years BC numbered 0, -1, -2, ...)
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@param gm Calendar month (1 to 12)
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@param gd Calendar day of the month (1 to 28/29/30/31)
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@return Julian Day number
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*/
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export declare function g2d(gy: number, gm: number, gd: number): number;
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/**
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Calculates Gregorian and Julian calendar dates from the Julian Day number
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(jdn) for the period since jdn=-34839655 (i.e. the year -100100 of both
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calendars) to some millions years ahead of the present.
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@param jdn Julian Day number
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@return
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gy: Calendar year (years BC numbered 0, -1, -2, ...)
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gm: Calendar month (1 to 12)
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gd: Calendar day of the month M (1 to 28/29/30/31)
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*/
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export declare function d2g(jdn: number): {
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gy: number;
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gm: number;
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gd: number;
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};
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/**
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* Normalize month to be in range [1, 12]
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* @param year
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* @param month
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*/
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export declare function normalizeMonth(
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year: number,
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month: number,
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): [number, number];
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