In ELI5 terms (ignoring gravitational distortion, or near light speeds) time is the same everywhere. What it sounds like you are referencing is how long a day or year is on another planet. That’s dependent on how fast a planet spins on its axis, or rotates around its sun.
So, say a planet makes on axial rotation every 8 hours. That means it takes 3 of their days to equal one of ours. Same with years. Their planet makes on complete orbit of their sun in 3 of our months the for every one of our years, they experience 4 years. So, by their calendar, someone who is Twenty years old on Earth would be 80 of their years old.
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