sunday 17 december 2017 18:42 UTC but be quick; it will spike at  18:45

lol but for real; nobody knows, on reddit the general view was that it would go down till 250 (some predicted 220) and that's what happened yesterday; went till 250 and then went to 280 again within an hour since then its been at 300-320 and it looks that 300 will be a nice buttom limit for now.. so if it was me; anything below 300 dollar seems good, i myself bought some at 270 dollar. i think it will stay a while at the 300 untill it gets nice and stable before it will start raising again. But don't take my word for it lol, in the end i don't think it will matter too much since i expect it to go to 500 dollar soon anyway