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When I moved back home after/in 10 years, all the streets and buildings looked very unfamiliar.

When I moved back home 10 years later, all the streets nd buildings looked very unfamiliar.

Which should I pick to fit in the above context, after/in 10 years or 10 years later, and why? Thanks.
Comments  
Hi,

Use "after."

"in ten years" is looking forward.

I'm going to Seattle, but I will move back East in ten years - that's 10 years from now.

I moved to Seattle, but I moved back East after ten years - that's now in the past, and I moved back 10 years after moving out there.
"in ten years" is looking forward.

This is very interesting to me. In some contexts, in X years indicates past. For example,

I've not seen him in 10 years.

Please correct me if I'm wrong

Thanks!
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No, you're right, in that context in=for.
Thanks, Marius Hancu!
Grammar GeekHi,

Use "after."

"in ten years" is looking forward.

I'm going to Seattle, but I will move back East in ten years - that's 10 years from now.

I moved to Seattle, but I moved back East after ten years - that's now in the past, and I moved back 10 years after moving out there.

Thanks, GG.

What about ten years later? What's wrong with it in the sentence in question?
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Later is fine. I was only differentiating between "in" and "after"
Thanks, GG.

Got it.