Mercury's location in your birth chart influences all of this! Mercury never travels more than 28 degrees from the Sun, so many people will have Mercury in the same zodiac sign as their Sun.
From Monday to Friday, the stock market remains open from 9:30 am to 4:00 pm, EST. PST time is 6:30 am to 1:00 pm.
So, you can take advantage of the lower daytrade margins anytime the market is open, just be sure to be flat when the market closes at 3:15p and 4:00p CDT. As an accounting note, any trades done after 4:00p are considered apart of the next daysâ business and will show up on your brokerage statement as such.