Historical clue formulations

• Complete fiasco, slangily — 2026-09-03
• FLOP — 2022-03-23
• It's worse than a bomb — 2020-05-29
• Flop that's one for the ages — 2019-11-03
• Facepalm inducer — 2017-10-27
• Not just a mess-up, in modern lingo — 2010-05-07