When was my website last tested?

Open the website in Silktide. The footer of the website sidebar shows when the last full test completed, and a retest control if you can start one. On a small screen, the same line sits in the website toolbar. Open that line for the exact time, how often automatic tests are scheduled, and when the next one is expected. Scheduled runs are best-effort, not an appointment.

Individual pages can also show when they were last captured inside the Inspector. Scheduled testing is configured per website or via account defaults in Account settings.