Since you did not provide feedback I tried to figure it out myself. The hex string is the seconds from the UNIX epoch and translates to
Sat 17 February 2007 16:53:10 UTC
Code:
#include <stdio.h>
#include <time.h>
main(void)
{
time_t epch = 0x45d732f6;
printf("0x%x -> %s", epch, asctime(gmtime(&epch)));
}