Historical clue formulations

• Sameness — 2025-08-20
• Equal pay, e.g. — 2021-03-17
• What the U.S. and Canadian dollars had, roughly, in the early 2010s — 2019-07-20
• All things being equal? — 2017-02-25
• Equivalence — 2013-07-07
• Correspondence — 2004-12-12
• Equality — 1999-02-15