These 10 days account for 35-38 percent of shopping traffic, according to ShopperTrak:

Black Friday Nov. 23, 2007
Super Saturday Dec. 22, 2007
Saturday Dec. 15, 2007
Friday Dec. 21, 2007
Sunday Dec. 23, 2007
Wednesday Dec. 26, 2007
Saturday Dec. 8, 2007
Saturday Dec. 1, 2007
Thursday Dec. 20, 2007
Saturday Nov. 24, 2007

Nov. 23, 2007.