You can check the calendar for all halts/adjusts/delists (link inside). Normally, MovieStocks halt Saturday at 6pm Pacific. Mar 04, 07:31
I usually log in around 12-1pm Pacific Time, and find that openers have been adjusted, and can then be traded...but Mar 04, 08:16
HSX adjusts the weekend openers usually around 9:30-10:30am PST {nm} Mar 04, 08:32
the stock is tradeable as soon as it adjusts...after adjust, the price is unfrozen at tonight's reset (midnight Pacific time) Mar 04, 09:45