Historical clue formulations

• Zinnia or sunflower — 2026-05-18
• Like many flowers and prizes — 2025-05-08
• Like meetings of the U.N. General Assembly — 2024-09-13
• Like most holidays and physicals — 2024-01-23
• Like most award shows — 2023-12-31
• Like some plants and physicals — 2022-08-07
• Yearbook — 2019-07-07
• Like most holidays — 2018-03-11
• Crabgrass, e.g. — 2016-10-23
• Like pansies and petunias — 2014-05-07
• Like many physicals — 2013-12-24
• Like the Perseid meteor shower — 2013-09-04
• Tomato or pea, e.g. — 2011-07-02
• Like some checkups — 2009-10-16
• Garden variety? — 2002-04-28
• Like some checkups — 2001-08-19
• Many a flower — 2000-10-14
• Once a year — 1997-10-20
• Beans or corn, e.g. — 1997-06-12
• Yearbook — 1996-04-14