Backend Development 2 min read

cal_to_jd – Convert Supported Calendar Date to Julian Day Number

The cal_to_jd() function in PHP calculates the Julian Day count from a given date, supporting Gregorian, Julian, Jewish, and French calendars, and returns the corresponding Julian Day number based on the provided calendar, month, day, and year parameters.

Laravel Tech Community
Laravel Tech Community
Laravel Tech Community
cal_to_jd – Convert Supported Calendar Date to Julian Day Number

The cal_to_jd() function computes the Julian Day number for a specified date, supporting the calendars CAL_GREGORIAN, CAL_JULIAN, CAL_JEWISH, and CAL_FRENCH.

int cal_to_jd(int $calendar, int $month, int $day, int $year)

Parameters

calendar : The selected calendar, which must be one of CAL_GREGORIAN, CAL_JULIAN, CAL_JEWISH, or CAL_FRENCH.

month : The month as an integer, with its valid range determined by the chosen calendar.

day : The day of the month as an integer, also dependent on the selected calendar.

year : The year as an integer, interpreted according to the chosen calendar.

Return value

Returns a Julian Day number representing the given calendar date.

backendPHPcalendarDate ConversionJulian Day
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