#include <windows.h> 
#include <stdio.h> 
#include <stdlib.h>
#include <time.h>
 
 
DWORD main(int argc, char *argv[]) { 
    struct tm *newtime;
    char am_pm[] = "AM";
    __time64_t long_time;

    _putenv( argv[1] );

    _time64( &long_time );                /* Get time as long integer. */
    newtime = _localtime64( &long_time ); /* Convert to local time. */

    if( newtime->tm_hour > 12 )        /* Set up extension. */
            strcpy( am_pm, "PM" );
    if( newtime->tm_hour > 12 )        /* Convert from 24-hour */
            newtime->tm_hour -= 12;    /*   to 12-hour clock.  */
    if( newtime->tm_hour == 0 )        /*Set hour to 12 if midnight. */
            newtime->tm_hour = 12;

    printf( "%.19s %s\n", asctime( newtime ), am_pm );    
    return 0; 
}