gregoriantojdConverts a Gregorian date to Julian Day Count Description
int gregoriantojd(int
$month , int $day , int $year )The valid range for the Gregorian calendar is from November 25, 4714 B.C. to at least December 31, 9999 A.D. Although this function can handle dates all the way back to 4714 B.C., such use may not be meaningful. The Gregorian calendar was not instituted until October 15, 1582 (or October 5, 1582 in the Julian calendar). Some countries did not accept it until much later. For example, Britain converted in 1752, The USSR in 1918 and Greece in 1923. Most European countries used the Julian calendar prior to the Gregorian. Parameters
Return Values
The julian day for the given gregorian date as an integer.
Dates outside the valid range return Examples
Example #1 Calendar functions
The above example will output: 2440871 10/11/1970 Example #2 Overflow behavior
The above example will output: 2458181 2458181 See Also
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