Last business day of month preceding contract month.
Last Trading Day:
Seventh business day preceding the last business day of the delivery month.
Trading Hours:
9:30 a.m. - 1:15 p.m. Chicago time, Mon-Fri.
Trading in expiring contracts closes at noon on the last trading day.
Overnight session hours are from 6:33 p.m. - 6:00 a.m. and 9:30 a.m. - 1:15 p.m. Chicago time, Sun-Fri
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