Historical clue formulations

• A long, long time — 2025-11-07
• Seemingly forever — 2025-08-03
• A long, long time — 2025-02-07
• Long, long times — 2024-02-21
• Untold millennia — 2023-11-19
• Ages — 2023-11-06
• Time immemorial — 2022-09-03
• Practically forever — 2022-05-11
• Units in the life span of a galaxy — 2021-01-31
• Almost forever — 2018-11-11
• Big stretches — 2017-11-26
• A while, in hyperbole — 2016-05-29
• Bajillions of years — 2015-12-31
• Millions of millennia — 2014-09-25
• Time immemorial — 2014-08-01
• Almost an eternity — 2012-07-05
• Time on end — 2010-05-19
• The time it takes mountains to rise — 2009-04-07
• Almost an eternity — 2008-06-11
• Time immemorial — 2007-08-17
• Long stretches — 2007-04-15
• Near eternity — 2007-02-18
• Ages and ages — 2005-08-03
• Ages and ages — 2003-12-08
• Untold centuries — 2003-11-13
• Ages — 2002-01-04
• Ages and ages — 2001-04-08
• Ages and ages — 2000-08-29
• Almost an eternity — 2000-03-29
• Time without end — 2000-02-13
• How long it takes mountains to form — 2000-01-12
• Forever, seemingly — 1999-09-02
• Seemingly forever — 1999-02-21
• Long times — 1997-12-24
• Long time — 1997-09-13
• Years and years — 1995-07-11