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.
The after-hours market close is the last transaction and final price of a security that is traded in the after-hours market. The morning after-hours trading hours run from approximately 8:00 a.m. to 9:15 a.m. The afternoon after-hours session extends from 4:15 p.m. to 8:00 p.m. Certain pre-market trading takes place as early as 6:00 a.m. during regular trading days and can last until the market opens in the morning.