(PHP 4 >= 4.0.0)
jdtounix -- Convert Julian Day to UNIX timestamp
Description
This function will return a UNIX timestamp corresponding to the
Julian Day given in jday or FALSE if
jday is not inside the UNIX epoch
(Gregorian years between 1970 and 2037 or 2440588 <=
jday <= 2465342 )
See also jdtounix().