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<p><tt>I believe the Shanks data for Ontario are rather messy and
not fully reliable.</tt></p>
<p><tt>He lists a lot of places all over Ontario (about 250) which
according to him follow the same time zone history as tz zone
America/Nipigon<br>
<br>
I think considerable local research is needed to sort out
pre-1970 Ontario time zone history.</tt></p>
<p><tt>Shanks describes 116 different rule sets for Ontario. I
attach screen shots from klm files on Google Earth showing how
the towns listed for Ontario by Shanks are locally distributed.</tt></p>
<p><tt>Label (5) represents the Shanks rule set which corresponds to
TZ rule set </tt><tt><tt>America/Nipigon, while according to TZ
the zone </tt></tt><br>
<tt><tt><tt><tt>America/Nipigon is a tiny area.<br>
</tt></tt></tt></tt></p>
<p><br>
</p>
<div class="moz-cite-prefix">On 17.01.20 10:01, Paul Eggert wrote:<br>
</div>
<blockquote type="cite"
cite="mid:b6563dd4-44b7-e0a5-f5a4-f551f9a35302@cs.ucla.edu">On
1/13/20 8:15 AM, Jeffery Nichols wrote: <br>
<blockquote type="cite">I was also wondering whether anyone on
your team has more data about <br>
what towns were part of America/Nipigon. <br>
</blockquote>
<br>
I got that data from my printed copy of the Shanks International
Atlas. It contains hundreds of place names in Canada but does not
sort them by time zone region. I just now looked in Shanks (4th
edition) for place names beginning with "A" with the same time
zone history as Nipigon (Shanks calls this Canada's region 35),
and found the following: <br>
<br>
Alfred <br>
Algoma Mills <br>
Algonquin <br>
Almonte <br>
Alvinston <br>
Appleton <br>
Apsley <br>
Arden <br>
Armstrong <br>
Armstrong Station <br>
Aroland <br>
Attawapiskat <br>
Auburn <br>
<br>
The book has latitude and longitude for each of these entries. It
would take some time to transcribe all this info (including B-Z)
for all of Canada. Also, Shanks partitions the world into many
more regions than tzdb does, because he doesn't have the 1970
cutoff that tzdb does. So he partitions Canada into 253 regions
and there could be other Shankian regions that share Nipigon's
post-1970 time zone history and would thus fall under
America/Nipigon in tzdb. <br>
<br>
<br>
</blockquote>
<br>
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