It's a different sort of experience, isn't it?
My dad was born in 1918, but his next older sister (who helped raise me) was born in 1904... the oldest of the five sibling was born in 1898, so I had a genuine auntie (not "great" auntie) born in 1898, 62 years my senior. Technically speaking, I'm an uncle to someone three years older than me!