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Calendar Functions

cal_days_in_month cal_from_jd cal_info cal_to_jd easter_date easter_days frenchtojd gregoriantojd jddayofweek jdmonthname jdtofrench jdtogregorian jdtojewish jdtojulian jdtounix jewishtojd juliantojd unixtojd

jdtounix

Supported Versions: PHP 4, PHP 5, PHP 7, PHP 8
Convert Julian Day to Unix timestamp
<?php jdtounix(int $julian_day): int