Prime Day used to be just once a year, in the summertime. However, in 2020 Amazon pushed this sale event to October 13 and 14 due to the pandemic. After this, it resumed the schedule with normal summer dates, with Prime Day 2021 and 2022 happening in June and July. However, due to the success of the October Prime Day in 2020, Amazon has decided to host two events this year and last. One in summer, the other in fall.
The first Prime Day in 2023 took place July 11 to July 12. The second one, called Prime Big Deal Days, will be sometime in October — more info to come.