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# Create a new variable named hill_valley where you've replaced the tzinfo of naive with the US/Pacific timezone. US/Pacif

Can't convert/replace() tz into US/Pacific

aware.py
```import datetime
pacific = 8
naive = datetime.datetime(2015, 10, 21, 4, 29)
hill_valley = datetime.datetime(2015, 10, 21, 4, 29 tzinfo = US/pacific)
```

I had issues with this at first too. You have to do it all manually.

`pacific = 8` is not a datetime. You need to make it subtract 8 hours from the time.

```pacific = datetime.timezone(datetime.timedelta(hours=-8))
```

after that you are correct with the `tzinfo =` part , but you need to make it equal to the variable that is =-8 hours (`pacific` in this case)

all in all it would look like this:

```#try to solve it, if still problems I can post solution
```

hopefully this helps! mark it up/best answer if it does! if not let me know!

STAFF

You forgot the comma before `tzinfo`. If you remember, though, we used a method to replace just singular attributes before. That's probably a better idea than rewriting the whole object all over again, yeah?

no problem!

please choose best answer to resolve the question. =)

import datetime

naive = datetime.datetime(2015, 10, 21, 4, 29) pacific = datetime.timezone(datetime.timedelta(hours=-8)) hill_valley = naive.replace(some code that will replace the tzinfo attribute)

I had a hard time with this question too, but I finally got it. I don't want to post whole answer so people can work on it, but this is a lot of help I think.