jdtounix
Description
int jdtounix ( int jday)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 ). The time returned is localtime (and not GMT).
See also unixtojd().