Is the day after thanksgiving, in the United States.

On Friday, November 23, 2018.

In Canada, the retailers have used this day as a way to keep Canadians at home shopping, although some still flock to the United States for the higher cost cuts.

Not to be confused by a drinking day a week before Christmas in the UK.

Actually, Black Friday seems to be going global, other countries like Mexico, Romania, India, France , Germany,Switzerland, Australia and New Zealand and many more…

https://en.m.wikipedia.org/wiki/Black_Friday_(shopping)?wprov=sfti1

In recent years, the United States retailers have been spreading sales for Christmas over November and December (commonly known as the Christmas Creep)