Historical clue formulations

• Sun: Prefix — 2026-04-04
• Prefix with -centric — 2026-03-07
• Prefix meaning "sun" — 2026-02-15
• Head for the sun? — 2023-11-17
• Prefix with sphere — 2023-11-12
• Prefix meaning "sun" — 2022-10-20
• Sun: Prefix — 2019-07-28
• Prefix with -tropic — 2013-07-23
• Sun: Prefix — 2009-02-16
• Prefix with centric — 2008-09-21
• Sun: Prefix — 2007-01-31
• Prefix with centric — 2005-11-27
• Sun: Prefix — 2003-10-02
• Prefix with centric — 2000-09-17
• Sun: Prefix — 2000-02-15
• Prefix with tropic — 2000-01-07
• Sun: Prefix — 1998-05-13
• Sun: Prefix — 1994-10-23