Buy S&P 500 @ 1650- won, Sell S&P 500 @ 1660- won

Buy S&P 500 around 1650 for 30 minutes expiration if it stays above
Result: won
S&P 500 expired @ 1659.34 at 1:30pm EDT

Sell S&P 500 around 1658 or 1660 (stronger resistance) for 30 minutes expiration if it stays below
Result: won
S&P 500 expired @ 1659.39 at 2:00pm EDT
Although it slightly broke above 1660 twice, it dropped back both times, allowing it to drop more later, at least temporarily
The 3rd time it hit 1660 & drop again  at 1:54pm EDT should not be traded because we mentioned to avoid trading near FOMC meeting minutes at 2:00pm EDT