Historical clue formulations

• Family-friendly, for the most part — 2023-03-16
• For nearly all to see? — 2021-03-20
• Like "E.T." and "Close Encounters of the Third Kind" — 2016-06-19
• Fairly clean, so to speak — 2016-01-22
• Suitable for most audiences — 2013-01-30
• Like most of the Harry Potter films — 2010-08-10
• For most movie audiences — 2001-11-20