Bil....the memory of our family.
Want to know the weather on a date during Bil's life? Ask Bil. Want to know the date that a holiday like Easter (a holiday moving around the calendar) in a certain year is? Ask Bil.
For him it's not a party trick. It may well be a function of his brain, which can not work right in so many ways, being able to devote large amounts of memory to other things.
I leaned on this ability a lot when my father in law died, 13 years ago this next Christmas. I helped my mother in law out by calling various agencies. And whenever they wanted a date in my father in law's life, there was Bil all ready to give the answers.
Even in the last couple of weeks-I had to help my mother in law fill out paperwork for Social Security. They wanted to know the date that Bil had last seen a doctor. Bill had it down - to the hour. And the visit before that. And the visit before that.
I know Bil isn't alone in this ability among people with autism. I just wish I could figure out a way for it to help him, or even to make him a better income than what his sheltered workshop job.