Historical clue formulations

• Celebratory events — 2025-09-25
• Holiday celebrations — 2017-10-01
• Fun gatherings — 2016-08-02
• Big celebrations — 2014-05-02
• Happy gatherings — 2014-04-02
• Themed events — 2009-08-13
• Happy gatherings — 2008-05-04
• Fun or song followers — 2004-01-09