Call it Prime Day, or Black Friday in July, but this week is expected to mark a major moment for summer spending. Why it matters: Billions of dollars are projected to be spent at Amazon and other retailers that are running competing sales.

Online spending is expected to surge to $23.8 billion across U.S. retailers during a 96-hour Amazon Prime Day event this week, according to an Adobe Analytics forecast released on Monday, as shoppers seek strong discounts on back-to-school gear ranging from apparel to electronics.

Prime Day sales event starts Tuesday. Here's what to know about when it starts in Ohio and what deals you can shop.