Anyone whose ever traded the markets will know that major breaking information is often released after the close - it means the bag holders will find themselves trapped in their positions on Monday.

So we're looking at 16.00 / 17.00 EST for the SHTF

Markets have been a bit sold off last couple of days, but nothing major yet. Possibly a few people speculating and liquidating in advance, but I assume no major investors or fund managers have considered the radical Q outcome.

They may also wait for late on Sunday (17 anyone) - as people are generally more free to riot and make fuss on the weekend, so late Sunday could be another time for this to drop.

It could even sit until morning of the 19th. There isn't really a rush here.