Historical clue formulations

• Second — 2021-05-28
• ___-day Saints (Mormons) — 2017-04-03
• More recent — 2015-01-11
• Second — 2008-05-24
• Not the first — 2003-02-01
• Former partner? — 2002-03-19
• Second of two — 2001-04-23
• Former's opposite — 2000-12-25
• Second of two — 2000-08-14
• Part of 78-Down — 1999-12-05
• Second of two — 1998-11-29
• Toward the end — 1997-05-09
• Toward the end — 1996-06-13