Not sure I had a hard enough time getting the big hand to work

Only hours for me...
There is a TimeMinute function available.
I would think you would need to have code like I just posted with CheckTime and say something like:
if(hours() == 6 {return (FALSE);}
Then it would not trade during the 6 o'clock hour. I just have the CheckTime tested before it places trades.
Minnelli