The researcher found that the average lowest price of bitcoin was at 6 am UTC time on Fridays and the best time to invest or buy bitcoin.
If you would have done this in the week-end just passed, you would have bought at around 10240$ and sold at 9790$. Not a good business.
The morale of the story is: don't just go by various self-called specialists, some don't know sh*t and Bitcoin market is more volatile than the "rules" they want so badly to find out.
Really not a good business because bitcoin volatility does not depend on the days of the week, it is not always that Fridays are good days to buy bitcoin and same with monday. The days of the week doesn't have much effect on bitcoin because the price moves mysteriously.