You're sure you remember exactly where you were for the big news. You're probably wrong

Roger Brown and James Kulik coined 'flashbulb memory' in 1977 for the vivid, confident recollections people form of hearing shocking news, like an assassination. Later research tracking people's accounts of events like the Challenger disaster over years found the details themselves often drift or flatly contradict what the person wrote down right after it happened — confidence in a flashbulb memory turns out to say nothing about its accuracy.

— Roger Brown and James Kulik, Flashbulb memories — Cognition, 1977