Japan doesn’t “really” have Christmas like in the west. And doesn’t have thanksgiving. So Amazon Japan decided it would make up a “cyber week” last year. It started Dec. 10th and ran for 7 days. So way later than in the western markets. Look for Amazon to be really pushing this as a shopping season next year.
Side tip, make sure you don’t peak and sell out too early. Loads of sales still to be made last 2 days before Christmas. Japanese Christmas shopping is really late.
I would like to add, that they certainly do have Christmas in Japan, only it is completely devoid of any religious overtones. In fact, if you ask a child what Christmas is, they will most likely reply, “Santa’s birthday”!
*This post originated from a post in the Amazon Japan Facebook group, “Amazon Japan PL”. The information may well have changed by the time you read this. Please check the DATE of the post before you make any decisions based on this information!