During the US Thanksgiving holiday, we will be making some changes to our usual trading hours. These adjustments will take place between Wednesday 27 November and Friday 29 November 2019, after which we’ll go back to normal trading hours.  (All times below are GMT).

Wednesday 27 November Usual closing times on US markets, US equities post-market open as normal.  

Thursday 28 November US equity markets will be closed. 
US index futures close early at 6pm. We will make an out-of-hours price on Wall Street, US 500 and US Tech 100 until futures re-open at 11pm. 
The Volatility Index closes early at 4.30pm. 
US Crude closes at 6pm, Brent Crude closes at 6.30pm.  
The US 30-Day Fed Funds Rate and the US Dollar Basket close at 6pm. 
Metals, including Gold and Silver, close at 6pm. 
US soft commodities will be closed. London Sugar No.5 closes early at 5pm. 
Friday 29 November US equity markets will close early at 6pm. There will be no pre or post-market trading. 
US index futures and the Volatility Index will close early at 6.15pm. We will make an out-of-hours price on Wall Street, US 500 and US Tech 100 until 9pm. 
US Crude closes at 6.45pm, Brent Crude closes at 7pm.   
The US 30-Day Fed Funds Rate and the US Dollar Basket close at 6.15pm.   
Metals, including Gold and Silver, close at 6.45pm.   
Cotton opens late at 1pm. Chicago Wheat opens late at 2.30pm. US soft commodities (except New York No.11 Sugar) will close early at 6pm. Lumber trades 3-6pm, Live Cattle trades 2-6.15pm.  
The futures desk and all 24-hour indices close at 9pm, FX closes at 10pm. 
 

Let me know if you need clarification on this.