Historical clue formulations

• Conditions of equilibrium — 2026-08-30
• Equilibria — 2026-07-12
• Equilibria — 2026-03-22
• Inactive periods — 2025-11-11
• Equilibria — 2023-05-14
• Motionless conditions — 2017-11-29
• Equilibria — 2017-06-17
• Balanced conditions — 2014-02-09
• Equilibria — 2012-12-30
• Equilibria — 2009-01-20
• Stagnant conditions — 2007-12-01
• Equilibria — 2006-10-28
• Failures to move — 2000-11-18
• Positions of equilibrium — 1999-12-21
• Conditions of equilibrium — 1997-08-03
• Equilibria — 1996-08-05
• Equilibria — 1996-05-25
• Stoppages — 1996-03-23
• Equilibriums — 1995-10-02