The actress Marilu Henner has this. She can be asked about Oct 2, 1982 for example, and she can give every detail; even what she was wearing. Weird.
Who's to contradict her? Sure, on May 12, 1975, a Monday, I was listening to Mr. D, the science teacher, explain genetic traits. I was sitting behind icky V and in front of bf B. S, with his wild hair, was two rows over to the right. The E. kid was sitting behind and to the left. Uppitty ML was wearing a purple and white drill team outfit and I was wearing a yellow and white dress. The sun was shining and I was looking out into the courtyard and day dreaming. See, that was easy and no one can say it didn't happen.