Amazon Prime Day 2025 ended on July 11 at 11:59 p.m. Pacific Time (2:59 a.m. Eastern Time July 12), marking a four-day event that ran from July 8 to 11. This was the longest Prime Day event in history, offering 96 hours of exclusive deals to Prime members.
For the more recent October 2025 Prime Big Deal Days, a similar but separate event, it ended on October 8, 2025, at 11:59 p.m. PDT, after running for two days from October 7 to 8 as a fall sale distinct from the summer Prime Day.
If the question about "20" was referring to another year or event, please clarify, but for 2025, the main Prime Day ended July 11, and the second Prime Big Deal Days ended October 8.
