The update that this article describes changes the time zone data to accommodate daylight saving time (DST) changes in several countries.
The update that this article describes is a cumulative update rollup that includes all previous Windows time zone changes. For more information about how DST changes may affect other Microsoft products, visit the following Microsoft website:
http://support.microsoft.com/gp/cp_dstFor more information about how daylight saving time changes may affect other Microsoft products, click the following article number to view the article in the Microsoft Knowledge Base:
914387 How to configure daylight saving time for Microsoft Windows operating systems
Please note: These packages are affected by the issue that is described in
Microsoft Security Advisory 2749655. In this issue, the digital signature on files that are produced and signed by Microsoft expire prematurely, and are therefore no longer available. The latest packages for these DST transitions are now available for download in the following Microsoft Knowledge Base article:
2756822 October 2012 cumulative time zone update for Windows operating systems
The following changes were made since the previous Windows cumulative time zone update:
- E. Europe Standard Time:
The display name for this time zone has been updated to "(UTC+2:00) E. Europe." from "(UTC+2:00) Nicosia." - Azores Standard Time:
Changes the 2013 DST start time to occur at 12:00:00 AM on the last Sunday of March and end time to occur at 01:00:00 AM on the last Sunday of October. - Caucasus/ Armenian Standard Time:
As previously described in the following blog (http://blogs.technet.com/b/dst2007/archive/2012/03/22/armenia-cancels-dst.aspx) the government of Armenia has cancelled Daylight Saving Time and will stay on permanent “winter time”. That article suggested that users move to a "workaround time" of Russian Standard Time. This Windows update makes the move permanent by removing the DST rule for the time zone “(UTC+4:00) Yerevan” - Pacific SA Standard Time:
As previously announced in Microsoft Knowledge Base article 2681116, Chile has extended the 2012 Daylight Saving Time. The Chilean government has changed the 2012 DST start date to occur on the first Saturday of September 23:59:59.999 and end date to occur on the last Saturday of April at 23:59:59.999. - Morocco Standard Time:
As previously announced in Microsoft Knowledge Base article 2698707, Morocco will switch to daylight saving time from 2012 onwards. The Moroccan government has changed the 2012 DST start date to occur on the last Sunday of April and end date to occur on the last Sunday of September. During the time of Ramadan, DST will be interrupted and from July 20 to August 19, 2012, time will be turned back to standard time. The transitions reflecting the start and end of Ramadan are not included in this KB, and can be installed by using the Fix-It solutions provided in Microsoft Knowledge Base article 2698707. - Samoa History Correction:
Samoa Time zone changes were included in Microsoft Knowledge Base article 2633952 (December 2011 Cumulative time zone update). As a result of this update, the entire 2011 calendar was updated to (UTC+13). This update reverts the 2011 calendar to (UTC-11) while the 2012 and future calendars will continue to be (UTC+13). The history correction has also been contained in KB 2657025. - Russian History Correction:
Russian Time zone changes were included in Knowledge Base article 2570791 (August 2011 Cumulative time zone update). As a result of Russia canceling DST and staying on permanent "summer time," the entire 2011 calendar was updated to summer time. This update changes the 2011 calendar to show winter time before March 27, 2011 while DST was still in effect. The history correction has also been contained in KB 2657025.
The time zone changes are summarized in the following table.
| Time zone key name | Display name | New DST start | New DST end | Additional Comments | |
| E. Europe Standard Time | (UTC+02:00) E. Europe | Not applicable | Not applicable | The DST rules did not change, only the display name changed from Nicosia to E.Europe | |
| Azores Standard Time | (UTC-01:00) Azores | Last Sunday of March 00:00:00.000 | Last Sunday of October 01:00:00.000
| This rule would be applicable from 2013 onwards only. 2012 rule remains unchanged. | |
| Caucasus/ Armenian Standard Time | (UTC+04:00) Yerevan | No DST |
No DST
| DST has been turned off for this time zone. | |
| Pacific SA Standard Time | (UTC-04:00) Santiago | First Saturday of September
23:59:59.999 | Last Saturday of April
23:59:59.999 | | |
| Morocco Standard Time | (UTC) Casablanca | Last Sunday of April
02:00:00.000 | Last Sunday of September
03:00:00.000 | Ramadan transitions are undertaken by the Fix-It solutions that are provided in 2698707. | |
The following is a complete list of additional display name changes that are implemented in these packages for specific locales.
| Time zone | Applicable Locale | Old Display Name | Updated Display Name | Applicable Platforms |
| Central America | Spanish | Hora de verano de Centroamérica | Hora de verano, América Central | Vista, Win 7 |
| Central America | Spanish | Hora estándar de Centroamérica | Hora estándar, América Central | Vista, Win 7 |
| Chennai, Kolkata, Mumbai, New Delhi | Bulgarian | (UTC+05:30) Ченай, Калкута, Мумбай, Ню Делхи | (UTC+05:30) Ченай, Колката, Мумбай, Ню Делхи | Vista, Win 7 |
| Chennai, Kolkata, Mumbai, New Delhi | Czech | (UTC+05:30) Bombaj, Čennaj, Kalkata, Nové Dillí | (UTC+05:30) Mumbaí (Bombay), Čennaj, Kolkata (Kalkata), Nové Dillí | Vista, Win 7 |
| Yangon (Rangoon) | Czech | (UTC+06:30) Rangún | (UTC+06:30) Yangon (Rangún) | Vista, Win 7 |
Samoa Daylight Time
Samoa Standard Time | Czech | Ostrovy Samoa (letní čas)
Ostrovy Samoa (běžný čas) | Samoa (letní čas)
Samoa (běžný čas) | Vista, Win 7 |
| Magadan, Solomon Is., New Caledonia | Dutch | (UTC+11:00) Magadan, Solomon Is., Nieuw-Caledonië; | (UTC+11:00) Magadan, Salomonseilanden, Nieuw-Caledonië | Vista, Win 7 |
| Solomon Is., New Caledonia | Dutch | (UTC+11:00) Solomon Is., Nieuw-Caledonië | (UTC+11:00) Salomonseilanden, Nieuw-Caledonië | Vista, Win 7 |
| Solomon Is., New Caledonia | Dutch | (GMT+11:00) Solomon Is., Nieuw-Caledonië | (GMT+11:00) Salomonseilanden, Nieuw-Caledonië | Win2K, Win 2003, XP |
| Chennai, Kolkata, Mumbai, New Delhi | Finnish | (UTC+05:30) Chennai, Kalkutta, Mumbai, New Delhi | (UTC+05:30) Chennai, Kolkata (Kalkutta), Mumbai, New Delhi | Vista, Win 7 |
| Almaty, Novosibirsk | Finnish | (UTC+06:00) Alma-Ata, Novosibirsk
| (UTC+06:00) Astana, Novosibirsk
| Vista, Win 7 |
| Beijing, Chongqing, Hong Kong, Urumqi | Finnish | (UTC+08:00) Peking, Chongqing, Hongkong, Urumqi | (UTC+08:00) Beijing, Chongqing, Hongkong, Urumqi | Vista, Win 7 |
| Magadan, Solomon Is., New Caledonia | French | (UTC+11:00) Magadan, Îles Salomon, Nouvelle Calédonie | (UTC+11:00) Magadan, Îles Salomon, Nouvelle-Calédonie | Vista, Win 7 |
| Solomon Is., New Caledonia | French | (UTC+11:00) Îles Salomon, Nouvelle Calédonie | (UTC+11:00) Îles Salomon, Nouvelle-Calédonie | Vista, Win 7 |
| Beijing, Chongqing, Hong Kong, Urumqi | German | (UTC+08:00) Peking, Chongqing, Hongkong, Urumchi | (UTC+08:00) Peking, Chongqing, Hongkong (SAR), Urumchi | Vista, Win 7 |
| Central Europe Standard Time | German
| (GMT+01:00) Belgrado, Bratislava, Budapest, Liubliana, Praga | (GMT+01:00) Belgrad, Bratislava (Pressburg), Budapest, Ljubljana, Prag | Vista, Win7 |
| Chennai, Kolkata, Mumbai, New Delhi | Greek | (UTC+05:30) Μαντράς, Καλκούτα, Βομβάη, Νέο Δελχί | (UTC+05:30) Τσενάι, Κολκάτα, Μουμπάι, Νέο Δελχί | Vista, Win 7 |
| Almaty, Novosibirsk | Greek | (UTC+06:00) Αλμά-Ατά, Νοβοσιμπίρσκ | (UTC+06:00) Αστάνα, Νοβοσιμπίρσκ | Vista, Win 7 |
| Almaty, Novosibirsk | Latvian | (UTC+06:00) Alma-Ata, Novosibirska | (UTC+06:00) Almati, Novosibirska | Vista, Win 7 |
| Samoa Daylight Time | Lithuanian | Samoa vasaros /
žiemos laik | Samoa vasaros /
žiemos laikas | Vista, Win 7 |
Samoa Standard Time
| Lithuanian | Standartinis Samoa
laik
| Standartinis Samoa
laikas
| Vista, Win 7 |
Magadan, Solomon Is., New Caledonia
| Lithuanian | (UTC+11:00)
Magadanas,
Saliamono salos,
Naujoji Kaledonija | (UTC+11:00)
Magadanas,
Saliamono Salos,
Naujoji Kaledonija | Vista, Win 7 |
| Solomon Is., New Caledonia | Lithuanian | (UTC+11:00)
Saliamono salos,
Naujoji Kaledonija | (UTC+11:00)
Saliamono Salos,
Naujoji Kaledonija | Vista, Win 7 |
| Azores | Norwegian | (UTC-01:00) Azorene
Azorene (sommertid)
Azorene (normaltid) | (UTC-01:00) Asorene
Asorene (sommertid)
Asorene (normaltid) | Vista, Win 7 |
| Beijing, Chongqing, Hong Kong, Urumqi | Norwegian | (UTC+08:00) Peking, Chongqing, Hongkong, Ürümqi | (UTC+08:00) Beijing, Chongqing, Hongkong, Ürümqi | Vista, Win 7 |
| Yangon (Rangoon) | Polish | (UTC+06:30) Rangun | (UTC+06:30) Yangon (Rangun) | Vista, Win 7 |
| Chennai, Kolkata, Mumbai, New Delhi | Portuguese (Portugal) | (UTC+05:30) Chennai, Calcutá, Mumbai, Nova Deli | (UTC+05:30) Chennai, Kolkata (Calcutá), Mumbai, Nova Deli | Vista, Win 7 |
| Fiji | Turkish
| Fiji Yaz Saati
Fiji Standart Saati
(UTC+12:00) Fiji, Marshall Adl.
(UTC+12:00) Fiji | Fiji Adaları Yaz Saati
Fiji Adaları Standart Saati
(UTC+12:00) Fiji Adaları, Marshall Adl.
(UTC+12:00) Fiji Adaları | Vista, Win 7 |
Midway Island, Samoa
| Ukrainian | (UTC-11:00) о. Мідуей, Американське Самоа
Східна Центральна Європа (літо) | (UTC-11:00) о. Мідуей, Самоа
Східна Європа (літо)
| Vista, Win 7 |
| E. Europe | Ukrainian | Східна Центральна Європа (зима) | Східна Європа (зима)
| Vista, Win 7 |
| Yangon (Rangoon) | Ukrainian | (UTC+06:30) Янґон (Рангун) | (UTC+06:30) Янґон
| Vista, Win 7 |
| Kaliningrad, Minsk | Ukrainian | (UTC+06:00) Алмати, Новосибірськ | (UTC+06:00) Астана, Новосибірськ | Vista, Win 7 |
| | | | |
Registry Key Information
E.Europe[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones\E. Europe Standard Time]
"MUI_Display"="@tzres.dll,-1680"
"MUI_Dlt"="@tzres.dll,-331"
"MUI_Std"="@tzres.dll,-332"
"Display"="(UTC+02:00) E. Europe"
"TZI"=hex:88,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,00,00,0a,00,00,00,05,00,03,00,00,\
00,00,00,00,00,00,00,03,00,00,00,05,00,02,00,00,00,00,00,00,00
Azores[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones\Azores Standard Time]
"TZI"=hex:3c,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,0a,00,00,00,05,00,03,00,00,\
00,00,00,00,00,00,00,03,00,00,00,05,00,02,00,00,00,00,00,00,00
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones\Azores Standard Time\Dynamic DST]
"FirstEntry"=dword:000007dc
"LastEntry"=dword:000007dd
"2012"=hex:3c,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,0a,00,00,00,05,00,03,00,\
00,00,00,00,00,00,00,00,03,00,00,00,05,00,02,00,00,00,00,00,00,00
"2013"=hex:3c,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,0a,00,00,00,05,00,01,00,\
00,00,00,00,00,00,00,00,03,00,00,00,05,00,00,00,00,00,00,00,00,00
Armenia (Win 7 and Vista)[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones\Caucasus Standard Time]
"TZI"=hex:10,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones\Caucasus Standard Time\Dynamic DST]
"FirstEntry"=dword:000007db
"LastEntry"=dword:000007dc
"2011"=hex:10,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,00,00,0a,00,00,00,05,00,03,00,\
00,00,00,00,00,00,00,00,03,00,00,00,05,00,02,00,00,00,00,00,00,00
"2012"=hex:10,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00
Armenia (Win XP and Win 2k3 and Win 2k)[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones\Armenian Standard Time]
"TZI"=hex:10,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones\Armenian Standard Time\Dynamic DST]
"FirstEntry"=dword:000007db
"LastEntry"=dword:000007dc
"2011"=hex:10,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,00,00,0a,00,00,00,05,00,03,00,\
00,00,00,00,00,00,00,00,03,00,00,00,05,00,02,00,00,00,00,00,00,00
"2012"=hex:10,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00
Morocco[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones\Morocco Standard Time]
"TZI"=hex:00,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,09,00,00,00,05,00,03,00,00,\
00,00,00,00,00,00,00,04,00,00,00,05,00,02,00,00,00,00,00,00,00
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones\Morocco Standard Time\Dynamic DST]
"FirstEntry"=dword:000007d7
"LastEntry"=dword:000007dc
"2007"=hex:00,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00
"2008"=hex:00,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,08,00,00,00,05,00,17,00,\
3b,00,3b,00,e7,03,00,00,05,00,06,00,05,00,17,00,3b,00,3b,00,e7,03
"2009"=hex:00,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,08,00,04,00,03,00,17,00,\
3b,00,3b,00,e7,03,00,00,05,00,00,00,05,00,17,00,3b,00,3b,00,e7,03
"2010"=hex:00,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,08,00,06,00,01,00,17,00,\
3b,00,3b,00,e7,03,00,00,05,00,06,00,01,00,17,00,3b,00,3b,00,e7,03
"2011"=hex:00,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,07,00,06,00,05,00,17,00,\
3b,00,3b,00,e7,03,00,00,04,00,06,00,01,00,17,00,3b,00,3b,00,e7,03
"2012"=hex:00,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,09,00,00,00,05,00,03,00,\
00,00,00,00,00,00,00,00,04,00,00,00,05,00,02,00,00,00,00,00,00,00
Chile[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones\Pacific SA Standard Time]
"TZI"=hex:f0,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,04,00,06,00,05,00,17,00,3b,\
00,3b,00,e7,03,00,00,09,00,06,00,01,00,17,00,3b,00,3b,00,e7,03
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones\Pacific SA Standard Time\Dynamic DST]
"FirstEntry"=dword:000007d7
"LastEntry"=dword:000007dd
"2007"=hex:f0,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,03,00,06,00,02,00,17,00,\
3b,00,3b,00,e7,03,00,00,0a,00,06,00,02,00,17,00,3b,00,3b,00,e7,03
"2008"=hex:f0,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,03,00,06,00,05,00,17,00,\
3b,00,3b,00,e7,03,00,00,0a,00,06,00,02,00,17,00,3b,00,3b,00,e7,03
"2009"=hex:f0,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,03,00,06,00,02,00,17,00,\
3b,00,3b,00,e7,03,00,00,0a,00,06,00,02,00,17,00,3b,00,3b,00,e7,03
"2010"=hex:f0,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,04,00,06,00,01,00,17,00,\
3b,00,3b,00,e7,03,00,00,0a,00,06,00,02,00,17,00,3b,00,3b,00,e7,03
"2011"=hex:f0,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,05,00,06,00,01,00,17,00,\
3b,00,3b,00,e7,03,00,00,08,00,06,00,03,00,17,00,3b,00,3b,00,e7,03
"2012"=hex:f0,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,04,00,06,00,05,00,17,00,\
3b,00,3b,00,e7,03,00,00,09,00,06,00,01,00,17,00,3b,00,3b,00,e7,03
"2013"=hex:f0,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,03,00,06,00,02,00,17,00,\
3b,00,3b,00,e7,03,00,00,0a,00,06,00,02,00,17,00,3b,00,3b,00,e7,03
Windows XP
PrerequisitesYou must have Windows XP Service Pack 3 (SP3) installed to apply this update. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
322389 How to obtain the latest Windows XP service pack
Update replacement informationNote You can install this cumulative update rollup even after you have installed any of the following previously released updates. This update replaces the following update:
2633952 December 2011 cumulative time zone update for Microsoft Windows operating systems
Windows Server 2003
PrerequisitesYou must have Windows Server 2003 SP2 installed to apply this update. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
889100 How to obtain the latest service pack for Windows Server 2003
Update replacement informationNote You can install this cumulative update rollup even after you have installed any of the following previously released updates. This update replaces the following update:
2633952 December 2011 cumulative time zone update for Microsoft Windows operating systems
Windows Vista or Windows Server 2008
Prerequisites
You must have Windows Vista or Windows Server 2008 Service Pack 2 installed to apply this update.
Update replacement informationNote You can install this cumulative update rollup even after you have installed any of the following previously released updates. This update replaces the following update:
2633952 December 2011 cumulative time zone update for Microsoft Windows operating systems
Windows 7 or Windows Server 2008 R2
Prerequisites
No prerequisites are required to apply this update. The same package installs both on the RTM version as well as the SP1 versions of Windows 7 and Windows Server 2008 R2.Update replacement informationNote: You can install this cumulative update rollup even after you have installed any of the following previously released updates. This update replaces the following update:
2633952 December 2011 cumulative time zone update for Microsoft Windows operating systems