3:45 margin cut-off . . no longer?

IB used to revert to overnight margins on the Globex futures at 3:45pm ET. Last 2 days that hasn't happend - is this something new or a glitch related to the daylight time changeover?
 
Quote from Xenia:

Without notice and for undisclosed reasons they changed it to 4:00 pm ET some weeks ago.

It was done because our clients asked for it. It was supposed to be mentioned in the communique, but we might have forgotten to do that.
 
I have an account at IB and just opened a new account at another firm to initiate an ES day trading strategy due to IB's high intraday margin requirements (1/2 the overnight).
 
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