Do Publicly Traded Companies (Stocks) Ever Post Their Quarterly Earnings Reports During TRADING HOURS ???

I have been wondering about something, but I cannot seem to find a lot of info on it.

Anyways, do publicly traded companies (more specifically, companies / stocks with the S&P500), Ever release their quarterly earnings report during TRADING Hours? Or do they always do it outside of trading hours?

Also, is there a way to know what DAY (not the time, but at least the DAY) that they will release their quarterly earnings?

I was curious about an idea that I had, which is THIS:

If you know the DAY that an S&P500 company will release its' quarterly earnings report, you could but some of their stock on that day, BEFORE they release their earnings.

Then you could do like a 1% / 5% Risk Reward or something (so 1% Stop Loss, 5% Sell Limit).

Then if the news is bad, you only lose (about) 1% (yes, the sudden spike may blow past your 1% Stop Loss, but probably not by a LOT), but if the news is GOOD, you will probably hit your 5% Sell Limit.

Even if the news is BAD half of the time, you would still come out way ahead in the long run.

I am guessing this would be way too easy though, so I am guessing the FOLLOWING is the case:

A: 99% of the times, these companies release their earnings OUTSIDE of Trading Hours

B: Companies don't tell you the exact DAY that they will release their quarterly earnings reports…

I am hoping that I am wrong about the above.

Anyone care to enlighten me? 🙂