Historical clue formulations

• Fall asleep on the couch, perhaps — 2022-04-04
• Fall asleep while watching TV, perhaps — 2020-07-06
• Begin dozing — 2020-06-21
• Doze — 2019-06-05
• Succumb to sleepiness — 2018-04-08
• Drowse — 2017-09-10
• Doze — 2017-02-26
• Doze — 2010-12-05
• Doze — 2007-03-27
• Doze — 2001-11-25