From the CME Globex Control Center, here is the summary of KEY changes, per CME market segment
Thursday, November 26, 2020 - Early Market "HALT" - Noon CST (Chicago)
*Any open positions must meet Exchange Maintenance Margin by 11:55am CST.
Friday, November 27, 2020 - Early Market "CLOSE" - CST (Chicago)
*Any open positions must meet Exchange Maintenance Margin 5 Minutes before CLOSE.
https://www.ampfutures.com/trading-info/margins/
CME Group Globex Thanksgiving Holiday Schedule: November 25, 2020 - November 27, 2020
View Full List: https://www.ampfutures.com/trading-info/holiday-hours/
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