Do PDT rules apply in the US overnight trading session?

Pattern Day Trading (PDT) rules apply in the US overnight trading session. Overnight trades are for the next business date. A buy in the overnight session (for the next business date) followed by a sale on that business date (early, regular or late hours) would be considered a day trade.

Additional Information

Trade US Stocks and ETFs Around the Clock
What are the trading hours for US overnight trading?
What is meant by Pattern Day Trader (PDT)?

Who is eligible to trade in the US overnight trading session?

What products can be traded in the US overnight trading session?

What happens if my account incurs an IMD over the weekend or on a US trading holiday?

Will I be subject to the U.S. Pattern Day Trading Rule once my account is migrated due to Brexit?