December 2007 Cumulative Time Zone Update is Now Available [Josh Free]

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In case you have not heard, the December 2007 cumulative time zone update for Microsoft Windows operating systems is now available.  The update can be downloaded right now from https://support.microsoft.com/kb/942763; the software update will also be available via Windows Update on an upcoming date.  This update includes everything previously released in the August 2007 cumulative time zone update plus additional time zone changes that were singed in to law after the August 2007 update was created.  This includes updates to existing standard time zones such as Arabic, Australia (Central, Eastern, and Tasmania), Egypt, Israel, and South America (E. South America, Central Brazilian).

The most notable change is the inclusion of a new time zone for the capital of the Bolivarian Republic of Venezuela, Caracas:

Id

Display Name

Standard Name

Daylight Name

DST start

DST end

Venezuela Standard Time

(GMT-04:30) Caracas

Venezuela Standard Time

Venezuela Daylight Time

12/31/2007 at 24:00

Not applicable

The TimeZoneInfo class can use the new time zone by referencing its identification string “Venezuela Standard Time”

To date Venezuela has typically observed South America Western Standard Time but is in the process of migrating to the new time zone — adjusting clocks backwards 30 minutes, from UTC -4:00 to UTC -4:30.  According to the latest news reports on the official Venezuelan government news site (see translated page) the start date may or may not be changed again between now and the end of calendar year 2007.

Additional Information

For the latest information on time zone changes please refer to the Microsoft Daylight Saving Time & Time Zone FAQs Blog, Hot Topics for Daylight Saving Time changes in 2007, and https://www.microsoft.com/time/.

Update: Fixed typo in the table.