Today August 10th is one my best friend's birthday from grade school. I remember her birthday, but, couldn't tell you what her married name is now, or how many kids she has. Every August 10th I think of her though.
I still recall another best friends phone number, she has long since moved away from there, yet it is stored away in my head.
I often wonder why it is you can recall older things and yet can't remember what you had for dinner yesterday.
Maybe it is age............