seems 3:30am to 11:30 am EST, I'm more certain of the close time than the open. 3:30 does show a consistent volume spike, which is 8:30am London & 9:30 Berlin
11/21/2012 10:30 *DJ DOE: US Crude Oil Stocks -1.466M Bbl In Wk; Seen +0.8M Bbl
11/21/2012 10:30 *DJ DOE: US Crude Oil Stocks -1.466 Mln Bbl At 374.47 Mln Bbl
Range bound in balance, possibly until 1pm ET, President Obama will speak about action we need to take to keep our economy growing & reduce our deficit.