Green Monday might just be most wonderful time of the year. Monday Dec. 12 marks what tends to be the biggest (and one of the most lucrative) online shopping days of the year.

The term Green Monday was coined by the auction Web site eBay in 2007. This day tends to be one of the heaviest online spending days because it is the two week mark until Christmas Day, allowing 14 days for gifts to arrive. 

For the 2011 holiday season, consumers have already spent $24.6 billion online, a 15 percent increase over one year ago. Last week alone shoppers spent $5.9 billion on retail. Six days this year have surpassed the billion-dollar threshold. 

According to The Hill, Green Monday might just reel in some of the heftiest online sales to date.

These highlights represent another very positive sign for the holiday shopping season, as the week following 'Cyber Week' often experiences relative softness in spending momentum due to retailers pulling back on their promotional activity, said comScore chairman Gian Fulgoni. 

As we enter what will be the heaviest week of the season for online retailers - beginning with 'Green Monday' on December 12 - all signs are now pointing to a strong finish to the season.

Here are some deals for you to enjoy on this Green Monday, that will surely leave your friends green with envy.

Target: free shipping, $299.99 4GB XBOX, $299 Apple iPod touch and more  

Kohl's: 20 percent off when you enter the code CC20DEC12

Lord & Taylor: 25 percent off on regular and sale site wide when you enter the code FRIENDS

Amazon: free two-day shipping

Guess: free shipping on $125 or more when you enter the code 125HOLIDAY

BEBE: $50 off $250 or more purchase when you enter the code GLAMGIFT

Jos A. Bank: save 20 percent when you enter the code FBFAN

Godiva: get 25 percent off any order at Godiva Chocolatier when you enter the code ELF

NFL Shop: 20 percent off your entire order

Verizon: 30 percent off select phones plus free shipping

Barneys NY: 75 percent off on new markdowns

Netflix: get two week free trial for first time customers when you enter the code FRIENDS09

K-Mart: $20 off $220+ of toys and games order when you enter the code K20OFF200TOYS12

Jessica London: 30 percent off entire order plus free shipping on orders $75 or more when you enter the code JLE4576

Paul Frank: free shipping on orderd $50 or more 

Toys R Us: buy one get one free for any Hasbro toy, up to 60 percent off and free shipping on everything