Historical clue formulations

• Parts of a season — 2025-02-06
• Pilots, e.g. — 2021-03-05
• Installments — 2019-02-22
• Sitcom segments — 2017-06-13
• Program developments — 2012-04-21
• Series composition — 2009-11-28
• Chapters — 1999-12-03
• Stories-within-stories — 1999-04-11
• Incidents — 1995-07-13