Amazon Prime Day events can vary in length depending on the specific event:
- The Prime Day event held in July 2025 lasted four days, from July 8 to July 11, ending at 11:59 pm Pacific Time on July 11.
- The October event known as Prime Big Deal Days in 2025 lasts for two days, specifically on October 7 and October 8, ending at 11:59 pm Pacific Time on October 8.
Thus, Prime Day can be anywhere from two days (as in October's Prime Big Deal Days) up to four days (as in the July event in 2025). The length depends on the specific yearly schedule Amazon sets for the event. Most commonly, it is a multi-day event with new deals each day for Prime members.
