Historical clue formulations

• Pilot, e.g. — 2020-12-13
• Any one of nine "Star Wars" films — 2020-03-09
• Unit of a TV series — 2018-09-03
• Segment of a binge-watch — 2017-05-16
• Sitcom installment — 2015-03-18
• Word in every "Star Wars" title — 2015-01-19
• Installment — 2012-04-01
• Pilot, for one — 2010-04-22
• Season opener, say — 2009-11-20
• Part of a season — 2007-09-16
• Serial number? — 2007-03-30
• Any "Star Wars" film — 2006-03-09
• Chapter — 2004-06-04
• Show piece? — 2003-09-27
• Soap unit — 2003-03-21
• Installment — 2003-02-21
• Happening — 2002-09-06
• Part of a series — 1999-04-22
• One of a series — 1997-03-15
• Show piece? — 1997-01-19
• Installment — 1996-03-22
• Occurrence — 1994-02-03
• Show piece? — 1993-12-29