Historical clue formulations

• Venomous arachnid — 2026-08-17
• Zodiac creature — 2023-04-04
• Zodiac symbol between scales and an archer — 2017-11-27
• Zodiac symbol — 2013-05-08
• Zodiac creature — 2003-10-27
• Ill-fated U.S. submarine of 1968 — 2000-06-15
• Stinger — 1998-01-29