Historical clue formulations

• One sporting a onesie — 2026-05-03
• Recent delivery — 2021-07-04
• One might keep you up at night — 2020-05-08
• Newborn — 2020-03-17
• Baby — 2019-03-08
• One not yet one, say — 2016-08-20
• Baby — 2014-11-26
• One under one — 2005-07-11
• Recent delivery — 2004-12-19
• Babe — 2003-08-25
• Pablum eater — 2001-12-16
• Wee one — 1997-05-26