Bitcoin doesn't really have that type of date that it increases, yeah the third quarter of every year normally becomes more active because people return from vacations and they return back to normal life and start investing once again but normally the second quarter is horrible in any investment tool because people tend to cash out for vacations that they normally can't afford but could cash out on investments and can afford that way but that didn't happen in bitcoin and it increased.
So long story short bitcoin is actually not like any other investment tool. One time it increased during fourth quarter, one time it dropped, one time it increased on third quarter, one time it dropped. It does whatever it wants whenever it wants and what time of the year it is doesn't really matter to it.
I have been reading a lot about the crypto market cycle and I think that Bitcoin normally has gotten good Decembers. If you are cashing out your money in Christmas, you might end up cashing more than what you might on Saint Patrick’s Day. But on the other hand, every day is not Sunday like we had the last December. The market value of Bitcoin stayed down as usual.