Historical clue formulations

• Sign up for again — 2025-04-20
• Answer — 2020-07-26
• Meet up with again — 2017-09-08
• Undo a secession — 2004-11-28
• Do a second hitch with — 2000-09-27
• Counterreply — 1998-08-17
• Sign up with again — 1996-07-22
• Answer, legally — 1996-01-25