When does "double odds gems" weekend end?

[Energizeric]

Please end this ASAP. I'd like to do upgrade some items and I'm pretty sure this "double odds" was probably half odds by accident (or maybe even 0% odds). Maybe someone made a mistake. Either way I have tried over 100 times during this event and come away with no grand gems, not even one.

Because I am foolish and greedy, I figured due to the double odds I would try to get some grand tarloks and grand reinforced gems. So I replaced gems on a bunch of items that had grand glacial gems, and spent over 1m on these gems doing it. Now I'm just going to wait until this event is over so I can try to get back my grand glacial gems.