Panda 4.2

What changed

Google confirmed a Panda refresh affecting roughly 2–3% of English queries, but said it would propagate very slowly across the index over a period of months. Because of the pace, most sites saw gradual drift rather than a single movement, and Google never announced a completion date. It was the last named Panda refresh before the system was absorbed into core ranking.

Timing

Rollout began 17 July 2015. No completion date was announced. Rankings typically remain unstable for the whole rollout window, so measurements taken inside it are not a reliable read on the outcome.

What it affected