FW: Problem in DST fall back procedure

Mon Nov 13 16:11:10 UTC 2006

I'm forwarding this message from Avi Koski, who is not on the time zone
mailing list. Those of you who are on the time zone mailing list should
direct replies appropriately.

AK: what's the exact geographic location of the place where things are
wrong?

				--ado

________________________________

From: Koski Avi [mailto:Avi.Koski at comverse.com] 
Sent: Monday, November 13, 2006 10:46 AM
To: tz at lecserver.nci.nih.gov
Cc: Sagi Yoav
Subject: Problem in DST fall back procedure

Hi,

We are using the files from: ftp://elsie.nci.nih.gov/pub/

There is a problem in the fall back procedure, which we encountered in
all our tested platforms (Tru64 4.0D/4.0F, Linux AS3 Update 8, Solaris
9).

We cahnged time to 01:55 , 4 Nov 2007. 
The time advances normally from 02:00hrs on and "does not fall back to
01:00hrs as desired".

# date

Sun Nov  4 02:01:23 EST 2007

# zdump -v US/Alaska | grep 2007

US/Alaska  Sat Nov  3 23:05:42 2007 AKDT

US/Alaska  Sun Mar 11 10:59:59 2007 GMT = Sun Mar 11 01:59:59 2007 AKST
isdst=0 gmtoff=-32400

US/Alaska  Sun Mar 11 11:00:00 2007 GMT = Sun Mar 11 03:00:00 2007 AKDT
isdst=1 gmtoff=-28800

US/Alaska  Sun Nov  4 09:59:59 2007 GMT = Sun Nov  4 01:59:59 2007 AKDT
isdst=1 gmtoff=-28800

US/Alaska  Sun Nov  4 10:00:00 2007 GMT = Sun Nov  4 01:00:00 2007 AKST
isdst=0 gmtoff=-32400

# zdump -v Canada/Yukon | grep 2007

Canada/Yukon  Sat Nov  3 23:06:07 2007 YDT

Canada/Yukon  Sun Mar 11 10:59:59 2007 GMT = Sun Mar 11 01:59:59 2007
YST isdst=0 gmtoff=-32400

Canada/Yukon  Sun Mar 11 11:00:00 2007 GMT = Sun Mar 11 03:00:00 2007
YDT isdst=1 gmtoff=-28800

Canada/Yukon  Sun Nov  4 09:59:59 2007 GMT = Sun Nov  4 01:59:59 2007
YDT isdst=1 gmtoff=-28800

Canada/Yukon  Sun Nov  4 10:00:00 2007 GMT = Sun Nov  4 01:00:00 2007
YST isdst=0 gmtoff=-32400

#

Is there a patch to this problem?

Please advise,

Avi Koski - Comverse Ltd., Platform Linux Group   

Tel: +972-50-7348330