Who is ahead on the arena of TIME?

If Father's Year of Birth 1950 and the Son's likewise 1980. WHO IS AHEAD?
The Father comes FIRST and the Son comes LATER But as if a general concept we percieve it as if FATHAR IS BEHIND and the SON IS FORWARD Whereas the Father is forward as he comes first.

We always precieve as the SON IS AHEAD AND FATHER IS FOLLOWING TO SON in the arena of the TIME....WHO IS AHEAD?

I need to explain it furthermore in reference with the TIME N SPACE.