When does stage 4 end?

Original schedule has it end on the 29th.
However, the NPC for the "Is it a Dream?" quest is missing, and Nexon said we would be able to complete it "on the 29th", presumably after they patch something.
No knowing whether they will extend the event a whole week or just the one day, and also no knowing whether the other quests will still be active.
So, if you are doing the crystanol quests, I suggest not counting on being able to continue doing it after 10PM PST Tuesday the 28th (probable patch time).
Good luck.

I have to, because I have exam week. I'm not repeating the quests 24/7, not sure how I can go throught the pain even if theres 2 more weeks...
Honestly Nexon, do you expect us to repeat same stupid quests about 150 times inside a week?