Historical clue formulations

• Clear warnings — 2026-07-01
• Security devices — 2025-05-26
• They're set to go off — 2024-11-19
• Wake-up calls — 2023-09-20
• Distresses — 2023-06-10
• Aids for sleepyheads — 2021-01-10
• Protection rackets? — 2019-07-24
• Museum installations — 2019-01-05
• Ironic items to steal — 2015-11-13
• Wake-up calls — 2013-05-12
• They're set — 2012-07-21
• Burglar discouragers — 2011-10-02
• Bells and whistles, maybe — 2010-04-25
• Warnings — 2010-04-22
• Eye-opening things — 2010-03-05
• Sleep disturbers — 2009-03-26
• Bells and whistles, say — 2008-03-20
• Wake-up calls — 2002-09-22
• They're set for rising — 2002-09-14
• Some buzzers — 2001-11-23
• Frightens — 2001-07-01
• They may arouse you — 2001-06-03
• Dream interrupters — 1995-09-06
• Alternatives to The Club — 1993-12-21