For the nq,es, and ym. I want to make sure b/c i swear different websites say different things: Mon-Thurs 24 hours except for a 15 min break from 3:15-3:30 Friday there is 1:15 break from 3:15-5:00. No trading on Sunday. What about Saturday?
They open on Sunday at 17:00. When they close on Friday at 15:15 they don't reopen again till Sunday night. http://www.cme.com/trading/prd/equity/emini-sp500_FTH.html