Windows 7 RTM December 2009 Cumulative Time Zone Update

Microsoft has made available for download a new Cumulative Time Zone Update for all currently supported Windows platforms, designed to implement time-zone changes that reflect modifications introduced around the world. The software giant explained that the December 2009 cumulative time zone update was set up to replace the previous refresh that was offered in August. A detailed list with all the modifications brought to the table by KB 976098 is included below.

In case you live in one of the geographical areas mentioned further down in this article, then it would be best to apply the update as soon as possible in order to make sure that the Windows operating system keeps up-to-date with the time changes in your country without any intervention from you. Microsoft mentioned that users that were not directly impacted by the update could postpone deployment to a later date. “We recommend that you deploy the most current Windows cumulative time zone update to guarantee the consistency of the time zone database on all systems,” the company noted.

According to Microsoft, the December 2009 cumulative time zone update is available for a range of operating systems, including the latest releases of Windows client and server, namely Windows 7 and Windows Server 2008 R2. But, in addition, the refresh can also be included into Windows XP SP2 and SP3, Windows Vista RTM, SP1 and SP2, Windows Server 2003 and Windows Server 2008.

Microsoft enumerated the changes introduced with “the previous Windows cumulative time zone update: Argentina Standard Time: Removes DST for 2010 and later years. Central Brazilian Standard Time: Updates dynamic DST table. Changes DST end date for 2010. E. South America Standard Time: Updates dynamic DST table; Changes DST end date for 2010. Egypt Standard Time: Changes the DST end date for 2009. Changes the TZI for 2010. Georgian Standard Time: Changes the display name and time zone bias from UTC+3 to UTC+4. Greenland Standard Time: Changes the TZI for 2010 for operating systems earlier than Windows Vista. Jerusalem Standard Time: Changes the TZI for 2010 for operating systems earlier than Windows Vista. Morocco Standard Time: Changes the TZI for 2010 for operating systems earlier than Windows Vista. N. Central Asia Standard Time: Removes ‘Almaty’ from the ‘(GMT+06:00) Almaty, Novosibirsk’ time zone. North Asia East Standard Time: Removes ‘Ulaan Bataar’ from the ‘(GMT+08:00) Irkutsk, Ulaan Bataar’ time zone. Pakistan Standard Time: Changes the TZI for 2010 for operating systems earlier than Windows Vista. Paraguay Standard Time: Changes the TZI for 2010 for operating systems earlier than Windows Vista. Ulaanbaatar Standard Time: Creates the Ulaanbaatar Standard Time time zone with the display name of ‘(GMT+08:00) Ulaanbaatar.’ W. Australia Standard Time: Removes DST for 2010 and later years.”