There are two recent Amazon Prime Day events in 2025 with different end times:
- The July 2025 Prime Day ended on Friday, July 11 at 11:59 p.m. Pacific Time (or 2:59 a.m. Eastern Time on July 12). This event lasted four days from July 8 to July 11 and was the longest Prime Day to date.
- The October 2025 Prime Big Deal Days (also called October Prime Day) started on October 7 and ends on Wednesday, October 8 at 11:59 p.m. Pacific Time (or 2:59 a.m. Eastern Time on October 9). This October event lasted 48 hours.
To answer specifically, if you mean the most recent event happening now in October 2025, Prime Day ends tonight, October 8 at 11:59 p.m. Pacific Time. If you mean the summer mid-year event, it ended on July 11, 2025 at 11:59 p.m. Pacific Time. Please specify if the question targets a particular Prime Day event in 2025 or the ongoing sale.