Historical clue formulations

• Certain seasonal workers? — 2025-05-29
• Cupid, e.g. — 2024-10-02
• Package deliverers of the present day? — 2019-09-29
• Dancer and Prancer — 2016-04-12
• Cupid, e.g. — 2008-11-23
• Christmas team — 2007-03-11
• Cupid, for one — 2003-10-05
• Dancer's group — 2002-12-14
• Dancer's partners — 2001-01-23
• Comet, for one — 2000-08-24
• Rudolph and teammates — 1999-05-03
• Comet, e.g. — 1999-01-03