Historical clue formulations

• In the past — 2019-08-14
• When the events in flashbacks took place — 2011-10-02
• Ago — 2008-10-11
• Supra — 2007-11-30
• Flashback caption — 2006-10-01
• Sooner — 2000-11-17
• Before now — 1997-09-09
• More primitive — 1997-03-16