PHP | jdtojulian() Function Last Updated : 20 Jul, 2021 Summarize Comments Improve Suggest changes Share Like Article Like Report The jdtojulian() function is an inbuilt function in PHP that is used to convert a Julian day count to a Julian calendar date. It converts Julian Day Count to a string containing the Julian Calendar Date in the month/day/year format.Syntax: int jdtojulian( $julianday ) Parameters: This function accepts a single parameter $julianday which is mandatory. It contains Julian's day as an integer.Return Value: This function returns the Julian Date as a string in the month/day/year format.The below programs illustrate the jdtojulian() function in PHP. Program 1: php <?php // Converts a Julian calendar date // to Julian Day count. $jdate = juliantojd(10, 25, 1996); // Print the Julian Day count. echo "JulianToJD is : ".$jdate . "\n"; // First converts the julian day to Julian // Calendar date and then print it. echo "JDToJulian is : ".jdtojulian($jdate); ?> Output: JulianToJD is : 2450395 JDToJulian is : 10/25/1996 Program 2: php <?php // Converts Julian calendar Date // to Julian Day count. $jdate = juliantojd(1, 10, 1998); // Print the Julian Day count echo "Julian Day Count : ".$jdate . "\n"; // Converts Julian Day count to // the Julian calendar Date $julian = jdtojulian($jdate); // Print the julian calendar Date. echo "Julian Calendar Date : ".$julian; ?> Output: Julian Day Count : 2450837 Julian Calendar Date : 1/10/1998 Related Articles: PHP | cal_days_in_month() FunctionPHP | easter_days() Function Reference: http://php.net/manual/en/function.jdtojulian.php Comment More infoAdvertise with us U ukasp Follow Improve Article Tags : Web Technologies PHP PHP-Calendar PHP-function Similar Reads PHP | cal_days_in_month( ) Function The cal_days_in_month( ) function in PHP is an inbuilt function which is used to return the number of days in a month for a specific year and according to a specific calendar such as Gregorian calendar, French calendar, Jewish calendar etc. The cal_days_in_month() function takes three parameters whi 2 min read PHP | cal_from_jd() Function The cal_from_jd() function is an inbuilt function in PHP that is used to convert a Julian Day Count into a supported calendar such as the Gregorian calendar, French Calendar, Jewish calendar, etc. This function accepts two parameters $jd and $calendar and returns the array containing calendar inform 2 min read PHP | cal_info( ) Function The cal_info() function in PHP is an inbuilt function that is used to return information about a specified calendar. 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