If there was a large drop in price in the middle of the day, but before the day ended it increased to what it was at the beginning of the day and even more, a significant upward return occurred. The of this change (move) will be a in a daily time frame. A formation on the daily time frame is a very strong indication for probability of increasing price in next days.
Example: The picture shows currency pair of EUR/USD in a 30 minute time frame. On Ausust 09, 2017 the price significantly decreased from 1.17495 to 1.16886 or even lower. But after that, it increased rapidly at the end of the day to 1.17578 and then closed.
Also in this picture - for better understanding - the in the daily time frame - in the result of changes in a day - is drawn.