Historical clue formulations

• A sixth of the way through the hour — 2025-06-17
• A little after the hour — 2023-05-04
• 50 before — 2019-04-21
• A sixth of the way through the hour — 2010-11-07
• A little after, timewise — 2007-06-01
• Phrase that can precede 11 or 12, but not 13 — 2003-03-21