Alexa, when is Amazon Prime Day? We finally got the answer this week, as Amazon announced its annual “Prime Day” sales event will kick off at midnight Pacific Time on Tuesday, October 13, and run through Wednesday, October 14. Prime Day came to life on July 15, 2015, as a way to celebrate Amazon’s 20th birthday, offering deep discounts to Prime members across a wide variety of categories. Each year, the event has grown larger. In 2019, Prime members worldwide purchased more than 175 million items, resulting in sales that surpassed Black Friday and Cyber Monday combined. Amazon’s own Echo and Fire branded products have typically been the bestselling products, often enticing customers to purchase Amazon Prime memberships.