Historical clue formulations

• Eagle constellation — 2023-12-30
• Eagle constellation — 2021-04-11
• Eagle constellation — 2021-01-04
• Eagle constellation — 2017-09-02
• Eagle constellation — 2016-02-28
• Heavenly neighbor of Scutum — 2010-04-09
• Constellation south of Cygnus — 1996-01-26