I don't understand their margin requirements

I guess I don’t understand their margin requirements. I traded 2 micros and got this alert before market close in a funded account.

You recently triggered the following notification message:
Reminder: Today is a holiday with an early market close. Equities: Markets close at 12:15 PM CST. Ensure your net liquidation value exceeds the required initial margin for your open positions. Your account must be properly funded by 12:00 PM CST to avoid liquidation. Nymex and Comex: Markets close at 1:45 PM CST. Similarly, your net liquidation value must exceed the required initial margin, and your account must be funded by 1:30 PM CST to prevent liquidation. Please take the necessary steps to ensure compliance with these requirements.

Anyone want to take the time to explain?
Thanks

Good day,
Trading during different times is broken up into different segments and each segment can require a different funding requirement. In some cases trading during the day might require a different funding requirement than trading over night. It was just a warning to ensure your account meets the overnight funding requirements.