Historical clue formulations

• One inside the Trojan horse — 2026-03-26
• Like accommodations for friars and nuns, typically — 2022-09-15
• No-frills — 2020-03-29
• Freight of ancient Greece — 2016-09-15
• Lacking creature comforts — 2016-05-15
• Lacking the traditional comforts — 2014-08-27
• One of 300 at Thermopylae — 2011-01-28
• Austere — 2004-02-24
• Lacking luxury and comfort — 1999-05-04
• Hardly decorated — 1998-11-28
• Sternly disciplined — 1997-08-22