Apple has sent out an email informing customers of its plans for a Black Friday sale. The company will hold a special, one-day shopping event on Friday, Nov. 26.

Black Friday is the day after Thanksgiving Day in the US and the traditional start of the Christmas shopping season. The origin of the term is that this is when retailers get to go into the “black” as opposed to the “red.” And it’s the busiest shopping day of the year.