Historical clue formulations

• "April Fools!" — 2022-12-15
• Trick question — 2019-08-25
• "O.K., I see" — 2019-01-20
• ___ journalism — 2012-09-08
• "Aha!" — 2011-05-10
• "You fell for it!" — 2008-10-20
• Nabber's cry — 2008-03-02
• "Aha!" — 2002-02-09
• "You're mine!" — 2001-01-07
• Nabber's cry — 1997-06-29