1- These levels are strong support and resistance levels in the short term, the market usually respects these levels strongly.
2- I highly recommend using divergences techniques, to find possible turning point during the week!
3- The recommended time frame, the 1 hour and below.
4- You can also use chart patterns, candlesticks, trend lines, and price action to find a possible turning point!
5- These levels would help you set realistic targets and exit points, so you can add them to your trading style.