You supposed to mention your country time zone. Your night time may be the evening or morning in some countries.
When bitcoin fell yesterday, it was in the evening in my country. I mean when it fell below $116000 yesterday. But the price increased back in the midnight and increased more at dusk.
There are times that bitcoin will fall during the day and also overnight. So what you said is strange to me and it is not correct.
I still don’t understand what OP was on about decreasing price in the middle of night, bitcoin doesn’t have time zone it is trading 24/7 and this is the first time I have seen someone complain or talk about drops in the night,
The usual predictions I have seen in the past is about bitcoin having lower liquidity during weekend because most people do not trade much but even this claim wasn’t true in my opinion. There were weekends where heavy pumps had happened in the past.
Bitcoin is tradable 24/7 and there is no specific time about when there some certain trends of the market. Market can pump and dump anytime of the day