[tz] efele.net/tz maps updated

Chris Walton Chris.Walton at telus.com
Wed Nov 11 02:13:28 UTC 2015

Eric M.,

Matt is correct.  You should adjust your map such that the northern boundary of  America/Dawson_Creek aligns with the northern boundary of the Peace River Regional District (PRRD).

This is a map that I created back in 2011; I shared it on this same mailing list at the time.


The green area represents the entire Peace River Regional District (PRRD).

The red outline represents my definition of the  Peace River time zone area (a.k.a. America/Dawson_Creek).

Questions have recently been asked about the  western boundary for America/Dawson_Creek.

Specifically, Steve Jones recently asked me in a separate e-mail why my map does not extend the Peace River time zone area (America/Dawson_Creek) west to include the entire PRRD.

Steve apparently had a conversation with the GIS Coordinator for the PRRD; Steve was told that “full MST applies to the entire PRRD”.

I do not agree with the statement that full MST (year-round Mountain Standard Time) applies to the entire PRRD.

There is one (and only one) community in the western half of the PRRD;  it is the isolated community of Fort Ware (also known as Kwadacha).  It has a population of about 270.

Wikipedia states that Mountain Time is observed year-round in  “most of Peace River Regional District (except Fort Ware)”.


I phoned the Kwadacha Nation Band Office today. The office is located in Fort Ware.  I spoke with a lady who told me that Fort Ware keeps the clocks in sync with Vancouver (PST/PDT).  Wikipedia is therefore correct.

When I created my map in 2011, I drew the time zone boundary though the Muskwa and Hart mountain ranges; that correctly put Fort Ware on the west side of the boundary and all other communities in the PRRD on the east side.



I used topographical maps to try and keep the line running right along the watershed boundaries.  The watershed boundaries are (by definition) always high up in the mountains where few people venture.

I don’t see any reason to make any changes to my map.  People are still free to use it, copy it, or ignore it as they see fit!

And for those that are interested:

Fort Ware is one of the most remote Canadian communities outside of the Artic.

The only land based connection to rest of the world is a 400km logging road that takes 8 to 10 hours to navigate.

I cannot say I have ever made the trip myself.


From: tz-bounces at iana.org [mailto:tz-bounces at iana.org] On Behalf Of Matt Johnson
Sent: November 8, 2015 08:20 PM
To: Zoidsoft
Cc: tz at iana.org
Subject: Re: [tz] efele.net/tz maps updated

Yes, many thanks Eric!  Though I think there's a slight correction needed for to extend the America/Dawson_Creek north to America/Fort_Nelson boundary, per Chris Walton:  https://mm.icann.org/pipermail/tz/2011-March/016744.html

@Zoidsoft - It's not clear whether Geonames uses Eric's tz maps or not, but either way it isn't yet reporting correctly for America/Fort_Nelson:

Currently it returns America/Vancouver.

So does Google:

There's a list of similar offerings here:


From: zoidsoft at gmail.com<mailto:zoidsoft at gmail.com>
Date: Sun, 8 Nov 2015 19:24:45 -0500
CC: tz at iana.org<mailto:tz at iana.org>
Subject: Re: [tz] efele.net/tz maps updated
I wonder if Geonames.org updated to use the new data yet?

On Sun, Nov 8, 2015 at 6:19 PM, Mark Davis [https://a.gfx.ms/emoji_02615.png] ️ <mark at macchiato.com<mailto:mark at macchiato.com>> wrote:
Very nice!


On Sun, Nov 8, 2015 at 10:31 AM, Eric Muller <eric.muller at efele.net<mailto:eric.muller at efele.net>> wrote:
I have updated the efele.net/tz<http://efele.net/tz> maps (http://efele.net/maps/tz/) to be in sync with TZ 2015g. The new zones:



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