By 9:35 AM EST, there is about a 20% chance that the high OR/AND low of the day in the S&P500 has been made.
By 10:05 AM EST, there is about a 55% chance that the high OR/AND low of the day in the S&P500 has been made.
By 11:00 AM EST, there is about a 90% chance that the high OR/AND low of the day in the S&P500 has been made.
By 9:35 AM EST, there is about a 20% chance that the high OR/AND low of the day in the S&P500 has been made.
By 10:05 AM EST, there is about a 55% chance that the high OR/AND low of the day in the S&P500 has been made.
By 11:00 AM EST, there is about a 90% chance that the high OR/AND low of the day in the S&P500 has been made.

I know I read from an article that the high and low of the day is usually, established after 30 minutes of trading or by 7:00am ET. That is why a lot of traders, especially day traders use those highs and lows. If XYZ goes above the high, it probably, will go higher during the day, if it takes out the low then, it will probably, go lower. Don't day trade so, do not pay attention to it at all!

I check the s/p 500 immediately after reading this, it seems to work for the past 20 trading daysBy 9:35 AM EST, there is about a 20% chance that the high OR/AND low of the day in the S&P500 has been made.
By 10:05 AM EST, there is about a 55% chance that the high OR/AND low of the day in the S&P500 has been made.
By 11:00 AM EST, there is about a 90% chance that the high OR/AND low of the day in the S&P500 has been made.