Historical clue formulations

• Tell all — 2021-10-15
• A biker may have a nasty one — 2017-01-28
• Tanker mishap — 2016-02-21
• Diner accident — 2004-10-26
• Coastline calamity — 2000-11-30
• Ecodisaster — 2000-08-10
• Let slip — 1999-07-21
• Highchair hazard — 1996-06-14
• Bad news for Exxon — 1996-05-22
• Knock over — 1996-04-02