Historical clue formulations

• — — 2026-09-17
• The eyes of an emoticon, typically — 2025-12-30
• Start of many emoticons — 2025-08-20
• This goes between chapter and verse — 2023-06-08
• Texted eyes, maybe — 2023-04-14
• Hour and minutes separator — 2020-11-10
• : — 2020-06-29
• Subtitle preceder, often — 2019-11-27
• Middle of time? — 2018-10-18
• Port on the Panama Canal — 2015-08-30
• Two points — 2014-04-27
• Something seen after hours? — 2012-10-27
• List preceder — 2009-10-28
• Two points? — 2008-06-01
• : — 2006-07-03
• Two points — 2004-11-20
• : — 2003-10-13
• Money of Costa Rica — 2003-04-04
• Two points in time? — 2000-09-09
• : — 2000-07-24
• List preceder — 2000-06-22
• List preceder — 1997-12-06
• Upended umlaut — 1997-09-21
• Theme of this puzzle — 1997-04-29
• Intestine part — 1996-03-05
• Analogy mark — 1995-06-22