Historical clue formulations

• Five stars, maybe — 2022-04-20
• Fair, e.g. — 2016-09-02
• Half a star, maybe — 2014-06-29
• G's opposite — 2012-11-25
• Place on a scale — 2011-07-23
• PG or R — 2008-06-03
• Number of stars, perhaps — 2006-05-19
• TV guide? — 1998-11-21
• X, e.g. — 1996-12-21