Historical clue formulations

• Hit the horn — 2025-09-20
• Honked — 2020-11-12
• Honked — 2019-03-12
• Blew one's horn — 2016-10-13
• Blew the whistle — 2006-02-11
• Blew — 2000-01-23
• Blew a horn — 1997-06-09
• Warned with a horn — 1994-08-24