DOT issues final ruling on Indiana time zones
The DOT final ruling on Indiana came out today: http://www.dot.gov/affairs/dot0406.htm Based on my reading of this document, only one zone in tzdata is affected, America/Indiana/Knox. That zone will start observing US Central Time starting April 2, 2006, at the time of the switchover to Daylight Savings Time. Probably the easiest thing to do is to change the last two lines as follows: From: -5:00 - EST 2006 -5:00 US E%sT to: -5:00 - EST 2006 Apr 2 2:00 -5:00 US C%sT assuming I'm interpreting everything correctly. The DOT doesn't specify whether Starke county switch to Central Time at the appropriate time for its old or new time zone, but I'm assuming the old here. That leads to it falling back from 2:00AM EST to 1:00AM CST, and then again from 2:00AM CST to 1:00AM CST. If that makes people nervous, then the transition would need to be at 3:00 AM. Deborah Goldsmith Internationalization, Unicode liaison Apple Computer, Inc. goldsmit@apple.com
On Jan 18, 2006, at 4:37 PM, Deborah Goldsmith wrote:
From: -5:00 - EST 2006 -5:00 US E%sT to: -5:00 - EST 2006 Apr 2 2:00 -5:00 US C%sT
Well, obviously that should be: America/Indiana/Knox: From: -5:00 - EST 2006 -5:00 US E%sT to: -5:00 - EST 2006 Apr 2 2:00 -6:00 US C%sT Does anyone seen anything else wrong with this? I have a deadline coming up and I'd like to get this fix in. Here's a patch on 2005r: --- northamerica.orig 2006-01-19 13:53:09.000000000 -0800 +++ northamerica 2006-01-19 13:53:11.000000000 -0800 @@ -603,8 +603,8 @@ -6:00 Starke C%sT 1962 Apr 29 2:00 -5:00 - EST 1963 Oct 27 2:00 -6:00 US C%sT 1991 Oct 27 2:00 - -5:00 - EST 2006 - -5:00 US E%sT + -5:00 - EST 2006 Apr 2 2:00 + -6:00 US C%sT # # Switzerland County, Indiana, last observed DST in 1972. # Zone NAME GMTOFF RULES FORMAT [UNTIL] Thanks, Deborah Goldsmith Internationalization, Unicode liaison Apple Computer, Inc. goldsmit@apple.com
<<On Thu, 19 Jan 2006 13:54:21 -0800, Deborah Goldsmith <goldsmit@apple.com> said:
Does anyone seen anything else wrong with this? I have a deadline coming up and I'd like to get this fix in. Here's a patch on 2005r:
- -5:00 - EST 2006 - -5:00 US E%sT + -5:00 - EST 2006 Apr 2 2:00 + -6:00 US C%sT
Well, that takes care of Starke County, but we still need to create a new zone for Pulaski, Knox, Pike, Daviess, Dubois, Martin, and Perry counties (the others specified in the rule as moving to C%sT). What city do you choose as an exemplar of the new zone? Vincennes seems to be thing biggest, with 18701 inhabitants. -GAWollman
participants (2)
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Deborah Goldsmith -
Garrett Wollman