Dutch Harbor, Alaska returns UTC-9 "America/Nome" but Google says it's UTC-10

[verhovsky]

According to Google, Dutch Harbor, Alaska is in the HAST UTC-10/UTC-9 timezone https://www.google.com/search?q=Dutch+Harbor%2C+Alaska+timezone , but

>>> import timezonefinder
>>> tf = timezonefinder.TimezoneFinder()
>>> tf.timezone_at(lng=-166.5485, lat=53.883729)
'America/Nome'
>>> tf.timezone_at(lng=-166.53954779822726, lat=53.894363261998166)
'America/Nome'

https://en.wikipedia.org/wiki/Time_in_Alaska says that

The tz database version 2021a contains seven time zones for Alaska for historical reasons. Only three (America/Adak, America/Anchorage, and America/Metlakatla) are currently in use.

So it seems like America/Nome is no longer in use.

That same Wikipedia article and this code I'm using to convert a timezone name to a UTC and DST offset:

import datetime

import pytz
from timezonefinder import TimezoneFinder

DST_DATE = datetime.datetime(2021, 4, 1)

tf = TimezoneFinder()

def coords_to_utcoffset_and_isdst(lng, lat):
    timezone_name = tf.timezone_at(lng=lng, lat=lat)

    timezone = pytz.timezone(timezone_name)
    timezone_now = datetime.datetime.now(timezone)
    offset = timezone_now.utcoffset().total_seconds() / 60 / 60

    dst = timezone.dst(DST_DATE).total_seconds() / 60 / 60

    return offset, dst

and the first results from https://www.google.com/search?q=alaska%2Fnome+time+zone (which is just some site by some people, doesn't look authoritative at all) that actually mentions "Alaska/Nome" instead of just telling the time in Nome, Alaska both have "Alaska/Nome" as a UTC-9/UTC-8 time zone.

Noticed this working on vangheem/pyzipcode#14

[verhovsky]

Looking at a map of timezones, Unalaska is definitely in the Alaskan Standard Time zone. Google is wrong.