If you still have a balance or an open position at BitMEX, four cut-off dates now apply to you. On August 26 at 04:00 UTC the operator imposes risk limits under which you can no longer open new positions and can only reduce existing ones. On September 2 at 12:00 UTC eleven perpetual swaps are settled early. On September 23 at 04:00 UTC the exchange ceases operations. After that you can still reach your balance, but you pay a monthly account fee for it. All four dates appear in the company's own notices, and all four are hard.