This small program is used to convert Unix time to local time.

#include <stdio.h>
#include <time.h>

void main(int argc, char **argv)
{
    time_t t = atoi(argv[1]);
    printf("%sn",ctime(&t));
}

Compile with:
$ gcc -o utime2me utime2me.c

Usage is as follows:
$ ./utime2me <utime>
$ ./utime2me 1186942177
Sun Aug 12 14:09:37 2007