With just 15 days left before Christmas, holiday shoppers are scrambling to check off all the items on their shopping lists. But thankfully, Green Monday, is here with deals and discounts on popular gift items.

Created by comScore, Green Monday is the second biggest virtual shopping day for online retailers celebrated annually the second Monday of December. But for 2012, experts believe shoppers will break last year's $1.1 billion record this Green Monday.

While Green Monday isn't as touted or publicized as Cyber Monday, the numbers aren't that far off, since this year shoppers spent $1.46 billion on the Monday after Black Friday.

And shoppers in general haven't green frugal either; From Nov. 1 to Dec. 2 this year, shoppers have spent more than $21 billion in the U.S., up from $18.6 billion last year during that period.

Walmart first celebrated Green Monday last year, when the company reported its second highest online traffic day the second Monday of December 2011. This year, Walmart is offering a Razor scooter for $20, $600 off a 55" HDTV, an Xbox 360 bundle with Skylanders: Spyro's Adventure plus two wireless controllers for $179, an LG BP125 Blu-ray Player on sale for $39.98, an Apple iPad 2 at $389 and more.

Amazon has also joined in on offering Green Monday discounts, with deals on the Kindle Fire for $50 off, Haier 55-inch LED HDTV's for $688.30, Samsung HDTV's from $567.99 (some of which come with $200 Amazon gift cards), Panasonic HD plasma televisions at $1,199, Sony LED HDTV's at $859.99, and select patio, lawn and garden furniture. Target will offer discounts like a Rachel Ray 14 piece cookware set for $180, a Remington Cordless Razor for $17 and a Samsung EC-PL210 14mp digital camera for $99. Toys R Us is offer 25% off bikes, tricycles, wagons, skates, skateboards and scooters and 30 percent off powered ride ons.

Green Monday will also be FedEx's busiest day of the year, with the company slated to deliver 19 million packages.