The way we perceive time is weird. Maybe it's an "illusion?" An hour can drag, almost come to a stop. A month, a year can fly by. One day you look up and a decade has come and gone.
Maria Popova reminds us that Robert Graves and Maurice Sendak once collaborated on a children's book.
So yes, one day, a blinking, happy little boy, the next a grizzled old man. Think Merlin without the wisdom, without the magic, without the cool hat.