Historical clue formulations

• 1960s dance craze — 2025-01-09
• 1960s dance — 2022-12-01
• 1960s dance craze — 2021-06-14
• Dance craze mentioned in the Beatles' "Revolution 9" — 2020-03-20
• 1960s dance — 2014-10-12
• Twist spinoff — 2012-09-23
• Twist alternative — 2010-02-19
• Mashed potato alternative — 2008-07-12
• 60's dance — 1998-09-23