Suppose, I'm looking at a screen with graphs. All graphs show me information from the last week. When I click on a specific graph, I get to see a larger version on a separate page. When I now adjust the zoom factor from 1 week to 1 day, I get to see the details of the last day. However, the page will automatically reload itself after 30 seconds, resetting the zoom factor to 1 week. Any change in the time shift is also reset.

By the way, the auto reload seems a bit superfluous to me when I've shifted time? I wasn't looking at the latest data anyway.