I've not done auto's yet, so my opinion is just purely speculation but i would say those plants look like they can do easily another 10 - 14 days before they get near full ripeness. And 36 days flowering sounds far too soon even for autos.
Honest opinion, I think it'd be a waste to harvest any earlier dude - which if u want it for New Year would mean chopping it down today to give it the weeks drying time which it would need at least. And i wouldnt recommend growing another week, chopping New Years Eve & smoking it the same night as that'd be a waste too, as Kojin rightly advised about drying.
I'd say buy some normal stuff for NYE and finish & dry this plant properly (at least 10 days dry & cure if u can) so it'll be there for u mid-Jan when ur probably more desperate & more skint! (if u are anything like me anyway; i may be wrong! lol!)
The main reason i say this is cause that does look a very nice, healthy & vibrant plant and i think if given near 2 weeks more then it will reward u further. Like i say, i not grown auto's yet but your one looks a very good advert for them! So if poss, let it finish well & dry & cure for a little while. The difference in taste & potency will be astounding.