Historical clue formulations

• Wasn't, then was — 2023-02-09
• Developed into — 2022-02-25
• Turned into — 2017-07-01
• Transitioned to — 2015-04-16
• Turned out — 2009-11-03
• Turned into — 2005-09-21
• Turned into — 1999-04-25
• Flattered — 1995-10-12
• Turned into — 1995-07-31
• Changed into — 1995-04-10