New TZ Rules for Daylight Savings Time
Carter Bullard
carter at qosient.com
Tue Feb 13 23:06:28 EST 2007
Hey John,
Ahhhh, my mistake was doing a zdump -v America/NewYork,
instead of Amercia/New_York. The output for the former did not
provide any confidence :o) I suspected that all was well, but you
never know.
Thanks!!!!
Carter
On Feb 13, 2007, at 4:39 PM, John Wade wrote:
> If you do a
>
> zdump -v America/Chicago
>
> In Linux, you will see that Linux keeps the timezone DST info per
> year. Most modern OS's do as does java 1.4 and later.
>
> Hope this helps,
> John Wade
>
>
> Carter Bullard wrote:
>> Gentle people,
>> Matthew raised an interesting issue. When systems change their
>> rules for
>> daylight savings time, our conversion for historical data could be
>> messed up.
>> Will my system now think to put in a daylight savings adjustment
>> when I
>> lookup data 3 years ago. I'll do some investigations, but if
>> anyone has any
>> additional information on say Linux support for changing DST
>> rules, give
>> a holler.
>>
>> Just as a followup, if anyone is having an issue with their
>> daylight savings time
>> rules, here are the affected time zones and their new
>> definitions. These rules
>> were defined in 2005, and so most should not have any problems,
>> but just in
>> case, here you go. Reference:
>> http://mail.openvms.org:8100/Lists/alerts/Message/378.html?
>> Language.
>> TZ Subregion: GB-Eire
>> Existing Rule: GB-Eire GMT0BST-1,M3.5.0/1,M10.5.0/1
>> Changed Rule: (US DST Extension):
>> GMT0BST-1,M3.5.0/1,M10.5.0/2
>>
>> TZ Subregion: WET
>> Existing Rule: WET0WET_DST-1,M3.5.0/1,M9.5.0/1
>> Changed Rule: WET0WEST-1,M3.5.0/1,M10.5.0/2
>>
>> TZ Subregion: Iceland
>> WET0
>> GMT0
>>
>> TZ Subregion: MET
>> Existing Rule: MET-1MET_DST-2,M3.5.0/2,M10.5.0/3
>> Changed Rule: MET-1MEST-2,M3.5.0/2,M10.5.0/3
>>
>> TZ Subregion: Poland
>> Existing Rule: MET-1MET_DST-2,M3.5.0/1,M9.5.0/1
>> Changed Rule: CET-1CEST-2,M3.5.0/1,M10.5.0/2
>>
>> TZ Subregion: EET
>> Existing Rule: EET-2EET_DST-3,M3.5.0/3,M10.5.0/4
>> Changed Rule: EET-2EEST-3,M3.5.0/3,M10.5.0/4
>>
>> TZ Subregion: Turkey
>> Existing Rule: EET-3EET_DST-4,M3.5.0/1,M9.5.0/1
>> Changed Rule: EET-2EEST-3,M3.5.0/3,M10.5.0/4
>>
>> TZ Subregion: US/Eastern
>> Existing Rule: EST5EDT4,M4.1.0/2,M10.5.0/2
>> Changed Rule: EST5EDT4,M3.2.0/02,M11.1.0/02
>>
>> TZ Subregion: US/East-Indiana
>> Existing Rule: EST5
>> Changed Rule: EST5EDT4,M3.2.0/02,M11.1.0/02
>>
>> TZ Subregion: US/Central
>> Existing Rule: CST6CDT5,M4.1.0/2,M10.5.0/2
>> Changed Rule: CST6CDT5,M3.2.0/02,M11.1.0/02
>>
>> TZ Subregion: US/Mountain
>> Existing Rule: MST7MDT6,M4.1.0/2,M10.5.0/2
>> Changed Rule: MST7MDT6,M3.2.0/02,M11.1.0/02
>>
>> TZ Subregion: US/Pacific
>> Existing Rule: PST8PDT7,M4.1.0/2,M10.5.0/2
>> Changed Rule: PST8PDT7,M3.2.0/02,M11.1.0/02
>>
>> TZ Subregion: US/Alaska
>> Existing Rule: AKST9AKDT8,M4.1.0/2,M10.5.0/2
>> Changed Rule: AKST9AKDT8,M3.2.0/02,M11.1.0/02
>>
>> TZ Subregion: US/Navajo
>> Existing Rule: MST7MDT6,M4.1.0/2,M10.5.0/2
>> Changed Rule: MST7MDT6,M3.2.0/02,M11.1.0/02
>>
>> TZ Subregion: US/Michigan
>> Existing Rule: EST5EDT4,M4.1.0/2,M10.5.0/2
>> Changed Rule: EST5EDT4,M3.2.0/02,M11.1.0/02
>>
>> TZ Subregion: US/Aleutian
>> Existing Rule: HAST10HAST9,M4.1.0/2,M10.5.0/2
>> Changed Rule: HAST10HADT9,M3.2.0/02,M11.1.0/02
>>
>> TZ Subregion: Canada/Newfoundland
>> Existing Rule: NST3:30NDT2:30,M4.1.0/2,M10.5.0/2
>> Changed Rule: NST3:30NDT2:30,M3.2.0/0:01,M11.1.0/0:01
>>
>> TZ Subregion: Canada/Atlantic
>> Existing Rule: AST4ADT3,M4.1.0/2,M10.5.0/2
>> Changed Rule: AST4ADT3,M3.2.0/2,M11.1.0/2
>>
>> TZ Subregion: Canada/Eastern
>> Existing Rule: EST5EDT4,M4.1.0/2,M10.5.0/2
>> Changed Rule: EST5EDT4,M3.2.0/2,M11.1.0/2
>>
>> TZ Subregion: Canada/Central
>> Existing Rule: CST6CDT5,M4.1.0/2,M10.5.0/2
>> Changed Rule: CST6CDT5,M3.2.0/2,M11.1.0/2
>>
>> TZ Subregion: Canada/Mountain
>> Existing Rule: MST7MDT6,M4.1.0/2,M10.5.0/2
>> Changed Rule: MST7MDT6,M3.2.0/2,M11.1.0/2
>>
>> TZ Subregion: Canada/Pacific
>> Existing Rule: PST8PDT7,M4.1.0/2,M10.5.0/2
>> Changed Rule: PST8PDT7,M3.2.0/2,M11.1.0/2
>>
>> TZ Subregion: Canada/Yukon
>> Existing Rule: YST9YDT8,M4.1.0/2,M10.5.0/2
>> Changed Rule: PST8PDT7,M3.2.0/2,M11.1.0/2
>>
>> TZ Subregion: Mexico/BajaSur
>> Existing Rule: MST7
>> Changed Rule: MST7MDT6,M4.1.0/2,M10.5.0/2
>>
>> TZ Subregion: Mexico/General
>> Existing Rule: CST6
>> Changed Rule: CST6MDT5,M4.1.0/2,M10.5.0/2
>>
>> TZ Subregion: Cuba
>> Existing Rule: CST5CDT4,M5.2.0/0,M10.2.0/0
>> Changed Rule: CST5CDT4,M4.1.0/0,M10.5.0/1
>>
>> TZ Subregion: Jamaica
>> Existing Rule: EST5EDT4,M4.1.0/2,M10.5.0/2
>> Changed Rule: EST5
>>
>> TZ Subregion: Brazil/East
>> Existing Rule: EST3EDT2,M10.2.0/2,M2.3.0/2
>> Changed Rule: BRT3BTST2,M10.3.0/0,M2.3.0/0
>>
>> TZ Subregion: Brazil/West
>> Existing Rule: WST4WDT3,M10.4.6/2,M2.2.6/2
>> Changed Rule: AMT4
>>
>> TZ Subregion: Brazil/Acre
>> Existing Rule: AST5ADT4,M10.4.6/2,M2.2.6/2
>> Changed Rule: ACT5
>>
>> TZ Subregion: Brazil/DeNoronha
>> Existing Rule: FST2FDT1,M10.4.6/2,M2.2.6/2
>> Changed Rule: FNT2
>>
>> TZ Subregion: Chile/Continental
>> Existing Rule: CST4CDT3,M10.2.0/0,M3.2.0/0
>> Changed Rule: CLT4CLST3,M10.2.0/0,M3.2.0/0
>>
>> TZ Subregion: Chile/Easter Island
>> Existing Rule: EST6EDT5,M10.2.0/0,M3.2.0/0
>> Changed Rule: EAST6EASST5,M10.2.0/0,M3.2.0/0
>>
>> TZ Subregion: Egypt
>> Existing Rule: EET-2EET_DST-3,J152/2,J305/2
>> Changed Rule: EET-2EEST-3,M4.5.5/0,M9.5.4/24
>>
>> TZ Subregion: Libya
>> Existing Rule: EET-2EET_DST-3,J121/2,J303/2
>> Changed Rule: EET-2
>>
>> TZ Subregion: PRC
>> Existing Rule: CST-8CDT-9,M4.2.0/2,M9.2.0/3
>> Changed Rule: CST-8
>>
>> TZ Subregion: ROK
>> Existing Rule: KST-9KDT-10,M5.2.0/2,M10.2.0/3
>> Changed Rule: KST-9
>>
>> TZ Subregion: Israel
>> Existing Rule: IST-2IDT-3,M4.3.0/2,M8.4.6/2
>> Changed Rule: IST-2IDT-3,M3.5.5/2,M9.3.0/2
>>
>> TZ Subregion: Iran
>> Existing Rule: IST-3:30IDT-4:30,M3.5.0/2,M9.3.0/2
>> Changed Rule: IRST-3:30
>>
>> TZ Subregion: Singapore
>> Existing Rule: SST-8
>> Changed Rule: SGT-8
>>
>> TZ Subregion: Australia/YANCOWINNA
>> Existing Rule: EST-9:30EST-10:30,M10.5.0/2,M3.5.0/3
>> Changed Rule: CST-9:30CST-10:30,M10.5.0/2,M3.5.0/3
>>
>> Hope this is useful!!!
>>
>> Carter
>>
>>
>
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