Friday NY sessions are not that volatile normally. If you only trade the NY sesson, take your day off
If you have orders open on Friday, it's wise to close them unless you are a position trader. You don't want to be caught by a big gap on Sunday open due to speculations or an unplanned high impact news event that occured during the weekend
Avoid trading Sunday open, spreads are widened due to the lack of liquidity during those market hours, gaps may occur due to unexpected high impact news resulting in your SL not being respected at all
Open trading account 