Let’s imagine it’s currently Wednesday the 1st. Does “next Saturday” mean Saturday the 4th (the next Saturday to occur) or Saturday the 11th (the Saturday of next week)?
Just stop being ambiguous. Give a specific date, because based on the number of answers here “next Saturday” could mean anything from last week to 6 years from now (yes, I’m being dramatic for effect).
When we get to this Saturday, next Saturday moves a week beyond our grasp. In some sense, when we die, our own timeline ends, and we can finally arrive at next Saturday for the first time.
Because the longest lives are around 110 years, and children start speaking around 3, the furthest in the future “next Saturday” can be is abouy 107 years.