Historical clue formulations

• It follows Oktober — 2025-03-23
• Ending with slug or snooze — 2024-10-21
• Suffix for a celebration — 2024-01-01
• Event suffix similar to "-Con" — 2023-09-18
• Suffix with Oktober — 2023-04-18
• Ending with Oktober or gab — 2022-12-12
• Big affair — 2022-12-10
• Suffix akin to "-o-rama" — 2022-05-07
• Multiday event, for short — 2021-11-07
• Ending with love or snooze — 2020-12-04
• Ending with slug or gab — 2020-07-16
• Ending with song or slug — 2018-07-19
• Celebration — 2017-09-14
• Celebration — 2017-06-11
• See 75-Across — 2014-11-09
• Suffix with Oktober or Ozz — 2014-08-18
• Fun or laugh follower — 2013-10-25
• Celebration — 2011-10-30
• Suffix with song — 2011-06-01
• Suffix with Oktober — 2010-07-19
• Suffix with beer or fun — 2009-05-19
• Suffix with song or slug — 2009-05-18
• Slug follower? — 2009-02-22
• Suffix with gab or song — 2007-05-28
• Celebratory suffix — 2006-01-17
• Suffix with Oktober — 2005-12-26
• Rear end of a slug? — 2005-12-15
• Suffix with slug — 2005-10-26
• Holiday suffix — 2005-04-25
• It follows song or slug — 2004-10-25
• Cultural gathering — 2004-09-12
• Gathering suffix — 2004-07-03
• Song ending? — 2004-06-20
• Love or song ending — 2003-07-30
• Slug follower — 2002-12-12
• Celebration suffix — 1999-12-30
• Big whoop-de-do — 1998-07-25
• Ending with song — 1997-10-03
• Suffix with gab or slug — 1997-09-23
• Event suffix — 1996-07-28
• Ending with slug or song — 1996-02-07
• Song or slug follower — 1995-03-12
• Suffix with slug or song — 1994-12-28