Daylight Savings Time for the United States covers the second Sunday in March through the first Sunday in November.
Summer operating hours begin at 7:00 PM until 4:00 PM (New York time),
Winter operating hours begin at 8:00 PM until 4:59 PM (New York time)
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It is strictly prohibited to leave trades open after the market closes, whether during business days or at the end of the week on Saturdays and Sundays.
In short, knowing trading hours is essential if you want to trade in the financial markets. Each market has its own trading sessions and opening and closing times, so it is important to educate yourself about them before you start trading. Also, it is important to remember that market activity varies depending on the trading session, so it is advisable to take this into account when planning your trading strategies.
Your account will be cancelled if orders are found, this applies to all accounts, meaning they will not be cancelled.