Amazon’s main July Prime Day 2025 runs July 8–11, 2025, ending at 11:59 p.m. Pacific Time on July 11.

For October 2025, Amazon is not calling the sale “Prime Day” but a separate event known as Prime Big Deal Days , which is the Prime-style fall sale many people search for with phrases like “Prime Day October 2025.”

October 2025 event dates

  • The October 2025 Prime-style sale (Prime Big Deal Days) is scheduled for October 7–8, 2025.
  • That means the October event is expected to end late on October 8, 2025 (typically by 11:59 p.m. local Amazon marketplace time, such as PT in the U.S.), similar to how timed Amazon sales usually close at the end of the second day.

How this differs from July Prime Day

  • July Prime Day 2025 : A 4‑day event from July 8 through July 11, ending at 11:59 p.m. PT on July 11.
  • October 2025 sale : A separate 2‑day event (Prime Big Deal Days) set for October 7–8, 2025, which many shoppers casually call “October Prime Day,” but it is technically a different branded promotion.

Quick tips to not miss the end

  • Plan to have your deals picked out before the evening of October 8 , since lightning deals and limited-stock offers may end earlier than the official event close.
  • Expect the heaviest discounts and best lightning deals to cluster in the first 24–36 hours, with some last‑minute drops on the final evening.

Information gathered from public forums or data available on the internet and portrayed here.