Every time I consider this I'm reminded of an incident where 3 Israeli Arabs blew themselves up instead of their target, probably due to daylight savings time.
That’s straight out of Tintin and the Broken Ear, where a would-be terrorist blows himself up after a time change: https://imgur.com/gallery/27jxctY
I have a collection of 'mistakes you make exactly once,' mistakes that are so obvious in retrospect and terrible in consequence that you would never, ever do it again.
This is a whole other class, though.
Care to share? I am sure that would be very useful for me (and probably many others).