GregorianToJD – Convert a Gregorian Calendar Date to a Julian Day Number (PHP)
This article explains the PHP gregoriantojd function, detailing its purpose of converting Gregorian calendar dates within the range 4714 B.C. to 9999 A.D. into Julian Day numbers, and describes its parameters, valid ranges, historical context, and return value.
The article introduces the PHP function gregoriantojd, which converts a Gregorian calendar date to its corresponding Julian Day count. int gregoriantojd(int $month, int $day, int $year) The Gregorian calendar is defined for dates from 4714 B.C. to 9999 A.D.; although the function can handle earlier dates, they are historically meaningless because the Gregorian system was introduced on 15 October 1582 (Julian 5 October 1582) and adopted by different countries at later times.
Parameters: • month : integer 1 (January) to 12 (December). • day : integer 1 to 31. • year : integer -4714 to 9999.
The function returns the Julian Day number corresponding to the supplied Gregorian date.
Signed-in readers can open the original source through BestHub's protected redirect.
This article has been distilled and summarized from source material, then republished for learning and reference. If you believe it infringes your rights, please contactand we will review it promptly.
Laravel Tech Community
Specializing in Laravel development, we continuously publish fresh content and grow alongside the elegant, stable Laravel framework.
How this landed with the community
Was this worth your time?
0 Comments
Thoughtful readers leave field notes, pushback, and hard-won operational detail here.