I know I am not pro or old here but I know little bit. I was saying that Bitcoin is just had always proven good start in December month and in first Quarter of New year and If history repeats than this will also be like God start of crypto Rally and I hope in this timeframe btc might go Upto 36k dollars before May crash.
We know that we cannot speculate Bitcoin price But I can say that as history repeats we can get chance and also a better judgement and it can be very risky.
That's Why Do your own research before putting money.
There's something we called 4years cycle in the cryptocurrency market and it's what determines if December month and the first quarter of the new year will be the start of the Bitcoin market rally.
Unfortunately, there won't be any market rally this year in December and the first quarter of next year until the 4-year cycle is complete which your calculation and the price trend you said about the month you mention are not correct.