static void SetTime(struct tm* date, byte* output)
{
    int i = 0;

    output[i++] = itob((date->tm_year % 10000) / 1000);
    output[i++] = itob((date->tm_year % 1000)  /  100);
    output[i++] = itob((date->tm_year % 100)   /   10);
    output[i++] = itob( date->tm_year % 10);

    output[i++] = itob(date->tm_mon / 10);
    output[i++] = itob(date->tm_mon % 10);

    output[i++] = itob(date->tm_mday / 10);
    output[i++] = itob(date->tm_mday % 10);

    output[i++] = itob(date->tm_hour / 10);
    output[i++] = itob(date->tm_hour % 10);

    output[i++] = itob(date->tm_min / 10);
    output[i++] = itob(date->tm_min % 10);

    output[i++] = itob(date->tm_sec / 10);
    output[i++] = itob(date->tm_sec % 10);

    output[i] = 'Z';  /* Zulu profile */
}
static void SetTime(struct tm* date, byte* output)
{
    int i = 0;

    output[i++] = itob((date->tm_year % 10000) / 1000);
    output[i++] = itob((date->tm_year % 1000)  /  100);
    output[i++] = itob((date->tm_year % 100)   /   10);
    output[i++] = itob( date->tm_year % 10);

    output[i++] = itob(date->tm_mon / 10);
    output[i++] = itob(date->tm_mon % 10);

    output[i++] = itob(date->tm_mday / 10);
    output[i++] = itob(date->tm_mday % 10);

    output[i++] = itob(date->tm_hour / 10);
    output[i++] = itob(date->tm_hour % 10);

    output[i++] = itob(date->tm_min / 10);
    output[i++] = itob(date->tm_min % 10);

    output[i++] = itob(date->tm_sec / 10);
    output[i++] = itob(date->tm_sec % 10);

    output[i] = 'Z';   
}