Comscore has reported that holiday season retail e-commerce spending for the first 48 days of the November/December 2009 holiday season to date has reach $24.8 billion – a four percent increase versus the same time last year.

The most recent week began on a slightly disappointing note, with sales of $854 million on Green Monday (Dec. 14, 2009) down 1 percent versus year ago, but was followed by three strong spending days that each surpassed $800 million. Most notably, Tuesday, December 15 set an individual day spending record with $913 million, the first such day to surpass the $900 million threshold.

So what were the other top selling days thus far for Internet retailers?
Consider using this as a guide to plan your 2010 e-commerce marketing.