if only people knew that buying BTC on mondays makes it more profitable than buying on any other day, i could have done it since day 1.
i took a peak to the article and was surprise the pattern they show starts way back from 2013. I think this started when some forex brokers added BTC on their platform, FOREX market sessions starts on monday and end in friday which i guess most crypto traders learned from forex.
Maybe this chart is relevant only for FOREX? I dont think that this is a sustainable trend since if everyone knew that they should buy Bitcoin only on Monday to 100% earn a lot of money on short term investments, the market would be already broken