Amazon Prime Day lasts different durations depending on the event. For the main Prime Day in July 2025, it lasted 4 days, from July 8 at 12:01 a.m. PDT until midnight July 11, offering 96 hours of deals. Meanwhile, the October event called Prime Big Deal Days in 2025 lasted 2 days, from October 7 at 12:01 a.m. PT until October 8 at 11:59 p.m. PT. So, the length of Amazon Prime Day can vary:
- The main summer Prime Day 2025 was 4 days long.
- The fall Prime Big Deal Days 2025 was 2 days long.
Both are exclusive shopping events for Prime members with special deals.
