Category:Featured lists that have appeared on the main page once

This category holds all of Wikipedia's Featured lists (or former featured lists) that have been featured on the Main Page exactly once. (Moons of Saturn appeared as Today's featured article; all other lists have, or will, appear as Today's featured list.) Lists are added to this category by the {{Article history}} template, if the |maindate= parameter is set (and in the past) and no |maindate2= parameter is set. The |maindate= parameter should only be added for featured lists (or former featured lists) that have been approved for the main page.