New site with North American Time Zone borders

Steve Jones stevejones at
Sat Feb 12 00:42:26 UTC 2011

At 11:45 2/11/2011, Chris Walton wrote:
>Back in 2007 I posted a Canadian time zone map 
>in one of the Google Earth forums.


Very nice!  My implementation of the kml version 
is much less ambitious, but I hope to keep it at 
least accurate.  I'm very grateful for the 
feedback on my errors and I will roll it into my next release.

I've also mimicked your shape for the east 
Kootenays for my next release.  Are you certain 
that the border from just north of Riondel to 
Glacier NP lies to the east of the lake road?  I 
had it running through the lake and then up the 
Duncan river from there.  I can't recall where I got that.

I also had the border of the no-DST area of BC 
near Dawson Creek drawn a bit too far 
north.  That line bisects Hwy 97 twice, once 
between Chetwynd and McLeod Lake, and again just 
south of Sikanni.  I wish I knew the precise 
coordinates of those two transitions.  Do you happen to have that?

>I guess we should assume that Petit-Mécatina is 
>now on AST year round as you have indicated.

Interesting that the Quebec/Labrador border 
between Blanc-Sablon and L'anse-au-Clair is 
apparently a 90 minute transition in the summer 
time when it separates Atlantic Standard from 
Newfoundland Daylight.  I can't recall running 
into any other instances of a border transition 
being over 60 minutes.  It must be very confusing 
keeping the ferry departure/arrival times 
straight for the St. Barbe / Blanc Sablon ferry.

Thanks again.


Steve Jones
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