Historical clue formulations

• Date unlikely to be on a calendar — 2026-05-08
• Private affair — 2025-04-11
• Meeting for two — 2024-05-19
• Plot element in "Romeo and Juliet" — 2023-09-19
• Romantic rendezvous — 2023-01-04
• Secret meeting between lovers — 2022-01-31
• Guilt-producing meeting, perhaps — 2021-12-12
• Date you might not put on the calendar — 2021-10-02
• Romeo and Juliet had one — 2021-09-28
• Secret rendezvous — 2021-04-18
• Meeting at a no-tell motel, say — 2020-12-01
• Suite meet? — 2020-11-01
• What a private detective might photograph — 2020-01-05
• Unpublicized date — 2019-12-21
• Lovers' rendezvous — 2019-10-01
• Meet on the down-low — 2019-06-30
• Cheating meeting? — 2017-07-20
• Intriguing meeting — 2017-07-08
• Meeting on the DL — 2017-05-13
• Private meeting — 2016-07-10
• Plot point in many a soap opera — 2016-03-17
• Part of a steamy affair — 2015-05-26
• Rely on — 2014-09-11
• Secret rendezvous — 2014-08-26
• Meeting at a no-tell motel — 2014-03-31
• Secret meeting — 2014-03-18
• Sweet meet? — 2013-02-10
• Amorous arrangement — 2012-10-13
• Meeting for Romeo and Juliet — 2012-08-20
• It might be cheating — 2012-08-11
• Romantic rendezvous — 2009-01-26
• Subject of many a billet-doux — 2008-12-20
• Date not marked on a calendar? — 2008-10-12
• No-tell motel visit — 2008-09-21
• Billet-doux suggestion — 2008-06-27
• Meet away from prying eyes — 2008-01-04
• Assignation — 2007-04-15
• Lovers' get-together — 2006-11-20
• Subject of an encoded message, maybe — 2006-10-13
• "Same Time, Next Year" happening — 2006-09-22
• Secret meeting — 2006-08-28
• Rendezvous — 2005-09-06
• Assignation — 2005-06-26
• Secret engagement — 2005-05-04
• Event in "The Merry Wives of Windsor" — 2005-04-13
• A private eye might videotape one — 2005-04-06
• Secret meeting — 2004-07-20
• Rendezvous — 2004-06-22
• It's a secret — 2004-02-29
• Guilt-producing meeting, maybe — 2003-11-25