What is Green Monday? Back in 2007, eBay coined the term "Green Monday" to describe it's top sales day in the month of December. It's basically your last chance to score deep discounts before Christmas if you missed out on any Black Friday or Cyber Monday deals. When is Green Monday? Green Monday typically falls on the second Monday of December. So in 2017, Green Monday will fall on December 11th. That's 12 days before Christmas and just 5 days before December 16h—AKA Free Shipping Day—the last day to order all of your gifts and get them by Christmas. How Do I Find Green Monday Deals? That's easy! Check out our Top Stores For Green Monday post, and shop Groupon Coupons for the best Green Monday coupons and sales from eBay, Amazon, and more!