Historical clue formulations

• XXX counterpart — 2026-01-07
• Employee's status meaning "I'm currently away" — 2025-08-03
• Message meaning "I can't be reached right now" — 2025-03-05
• "I'm on vacation" email inits. — 2024-10-09
• Tic-tac-toe win — 2024-03-11
• "I'm not working right now," in email shorthand — 2024-02-18
• Winning tic-tac-toe line — 2024-01-29
• Away from work, for short — 2023-10-03
• On vacation, in work calendar shorthand — 2023-09-27
• Off from work, in emails — 2023-06-17
• Winning tic-tac-toe line, when player X isn't paying attention — 2023-01-10
• Worker's "on vacation" inits. — 2022-03-06
• Rare tic-tac-toe win — 2022-01-20
• Hugs, on a love letter — 2021-11-17
• Tic-tac-toe win — 2020-12-21
• Hugs, in a letter — 2019-09-08
• Tic-tac-toe win — 2019-04-23
• "Hollywood Squares" win — 2018-01-21
• Win on "Hollywood Squares" — 2017-12-17
• Setting after resetting — 2017-07-29
• It's as good as XXX — 2016-08-21
• Tic-tac-toe winner — 2015-07-28
• Game-winning row — 2015-07-19
• Winning "Hollywood Squares" line — 2015-01-26
• Winning tic-tac-toe row — 2015-01-06
• Tic-tac-toe winner — 2014-09-08
• Queenside castle indicator, in chess — 2014-07-26
• Tic-tac-toe winner — 2013-10-27
• Tic-tac-toe winner — 2012-04-08
• Tic-tac-toe victory — 2011-08-15
• Tic-tac-toe line ... and a hint to this puzzle's theme — 2011-06-01
• Tic-tac-toe win — 2010-12-23
• Winning lineup — 2010-07-17
• Tic-tac-toe win — 2008-10-13
• "Hollywood Squares" line — 2007-11-04
• Noughts-and-crosses win — 2007-10-17
• Win in a children's game — 2007-09-02
• Line struck through by a winner — 2007-06-30
• Resetting setting — 2007-04-15
• Tic-tac-toe win — 2006-08-21
• Resetting setting — 2006-06-02
• Winning tic-tac-toe row — 2005-10-31
• New pedometer reading — 2005-08-11
• Queenside castle, in chess notation — 2005-08-11
• Tic-tac-toe winner — 2005-08-11
• Hugs, symbolically — 2005-08-11
• Hugs, in a letter — 2005-03-16
• Tic-tac-toe winner — 2005-01-02
• Tic-tac-toe winner — 2004-03-16
• Tic-tac-toe win — 2004-01-05