Historical clue formulations

• Recognized — 2026-03-11
• Widely recognized — 2023-05-31
• In the public consciousness — 2021-12-13
• Famous — 2018-12-30
• Not anonymous — 2017-12-14
• Public — 2012-02-19
• Widely recognized — 2005-05-16
• Famous — 2003-01-23
• Public, as information — 2002-08-07
• On the map — 2000-03-20
• Famous — 1999-07-21
• Understood — 1995-02-28