Is this possible to place order in given time included seconds?

eg:

i want to place order in 10:00:15

i tried coding for given minutes, but how to make order in exact seconds too?

{
    int datetime = TimeCurrent();
    int hour = TimeHour(datetime);
    int minute = TimeMinute(datetime);
    if (DayOfWeek() != Today && hour == 10 && minute == 0)
    {
        Today = DayOfWeek();
            
    }