Historical clue formulations

• Naps, in Nicaragua — 2026-09-23
• Breaks along the Panama Canal? — 2019-06-30
• Naps south of the border — 2017-04-05
• Times when shops close — 2015-12-13
• Times out in Mexico? — 2012-11-11
• Occasions to close up shop — 2010-05-28
• Followers of some meals — 2009-06-20
• Shop-closing occasions — 2009-06-18
• Breaks in the heat? — 2007-07-21
• Naps — 2007-04-01
• Naps, for señores — 2005-10-11
• Naps, in Nogales — 2001-11-08
• Breaks for the Mexican border? — 1996-10-05
• These can close Mexican stores — 1996-05-30
• Rests under a sombrero — 1993-11-27