Daylight saving time changes in the US

F

figgie

Supreme [H]ardness
Joined
Feb 11, 2002
Messages
7,829
Ok folks

just getting this out NOW as next year it is going to be intresting for DST changes for enterprise enviroments.

http://www.microsoft.com/windows/timezone/dst2007.mspx

it will happen 3 weeks earlies in 2007 on out. The hotfixes are out for Windows 2003 and XP SP2

http://support.microsoft.com/kb/928388/

windows 2000 and all other OS will need to modify registry keys to get this done.

The old time Zone registry



[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones\Eastern Standard Time]

"TZI"=hex:2c,01,00,00,00,00,00,00,c4,ff,ff,ff,00,00,0a,00,00,00,05,00,02,00,00,\
00,00,00,00,00,00,00,04,00,00,00,01,00,02,00,00,00,00,00,00,00

The new Timezone registry is as follows... the key figures are in bold

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones\Eastern Standard Time]

"TZI"=hex:2c,01,00,00,00,00,00,00,c4,ff,ff,ff,00,00,0b,00,00,00,01,00,02,00,00,\
00,00,00,00,00,00,00,03,00,00,00,02,00,02,00,00,00,00,00,00,00

a breif explanation

0B equals the 11 month (hexadecimaly to decimal) in the first snipet it is 0A which is the 10th month or October

01 means the First week of that month

03 equals the third Month or April

02 means the 2nd week of the month.

so this applies to ALL the time zones.
 
Redshirt #24 said:
Hm. The XP/x64 fix should be along either later this week or early next, then...
Click to expand...
I got the update as an optional patch this past Tuesday on both XP64 and 2003.

EDIT: I meant to say that I got it Tuesday through Windows Update.
 
the patch it out already.. the site i linked.

That patch though is an EXE.

For GPO deployment.. the registry method is the fastest way without any executables

Code: 
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones\Eastern Standard Time]
"Display"="(GMT-05:00) Eastern Time (US & Canada)"
"Dlt"="Eastern Daylight Time"
"Std"="Eastern Standard Time"
"MapID"="38,39"
"Index"=dword:00000023
"TZI"=hex:2c,01,00,00,00,00,00,00,c4,ff,ff,ff,00,00,0b,00,00,00,01,00,02,00,00,\
  00,00,00,00,00,00,00,03,00,00,00,02,00,02,00,00,00,00,00,00,00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones\Central Standard Time]
"Display"="(GMT-06:00) Central Time (US & Canada)"
"Dlt"="Central Daylight Time"
"Std"="Central Standard Time"
"MapID"="36,37"
"Index"=dword:00000014
"TZI"=hex:68,01,00,00,00,00,00,00,c4,ff,ff,ff,00,00,0b,00,00,00,01,00,02,00,00,\
  00,00,00,00,00,00,00,03,00,00,00,02,00,02,00,00,00,00,00,00,00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones\Mountain Standard Time]
"Display"="(GMT-07:00) Mountain Time (US & Canada)"
"Dlt"="Mountain Daylight Time"
"Std"="Mountain Standard Time"
"MapID"="34,35"
"Index"=dword:0000000a
"TZI"=hex:a4,01,00,00,00,00,00,00,c4,ff,ff,ff,00,00,0b,00,00,00,01,00,02,00,00,\
  00,00,00,00,00,00,00,03,00,00,00,02,00,02,00,00,00,00,00,00,00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones\Pacific Standard Time]
"Display"="(GMT-08:00) Pacific Time (US & Canada); Tijuana"
"Dlt"="Pacific Daylight Time"
"Std"="Pacific Standard Time"
"MapID"="32,33"
"Index"=dword:00000004
"TZI"=hex:e0,01,00,00,00,00,00,00,c4,ff,ff,ff,00,00,0b,00,00,00,01,00,02,00,00,\
  00,00,00,00,00,00,00,03,00,00,00,02,00,02,00,00,00,00,00,00,00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones\Alaskan Standard Time]
"Display"="(GMT-09:00) Alaska"
"Dlt"="Alaskan Daylight Time"
"Std"="Alaskan Standard Time"
"MapID"="30,31"
"Index"=dword:00000003
"TZI"=hex:1c,02,00,00,00,00,00,00,c4,ff,ff,ff,00,00,0b,00,00,00,01,00,02,00,00,\
  00,00,00,00,00,00,00,03,00,00,00,02,00,02,00,00,00,00,00,00,00

this is only for the 5 time zone in the US only.
 
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