Historical clue formulations

• Clicks "I agree," maybe — 2023-03-12
• Decides to join — 2022-10-11
• Chooses to receive marketing emails, say — 2021-10-14
• Gets on a mailing list, say — 2021-06-18
• Chooses to participate — 2010-12-06
• Doesn't decline — 2009-11-20
• Chooses to participate — 2007-10-16