if we look at most years, then we see a trend going on the date 29th, this means that usually the rate of btc drops, from the research I have done, the settlement may even be more than 1000 usd, this is depending on the market, but more than 1 thing, I am sure that the price drops year after year.
Take years from 2015 until now, we see most times a drop on this data, maybe is this beacase Xmas, or selling for Tax.
we will see or this trend will be done also today, i will update you.