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A Hotfix is a product update package with one or more updated product files that fix a specific product problem.


Please be aware this Hotfix has not gone through full Microsoft product regression testing nor has it been tested in combination with other Hotfixes.

Please carefully review the associated Hotfix KB article to verify the fix is the one needed and there are no known compatibility or installation issues. You may also want to contact a Microsoft Support Professional at

Issue Description

KB932392:FIX: Visual C++ .NET 2005 C runtime daylight saving time 2007 update for the TZ environment variable

If you use the TZ environment variable in Microsoft Visual Studio 2005, the following C runtime (CRT) functions do not recognize daylight saving time (DST) correctly.• localtime
• localtime_s
• _localtime32
• _localtime64
These functions recognize DST as starting on the first Sunday of April and ending on the last Sunday of October for all dates. These functions do not recognize DST as starting on the second Sunday of March and ending on the first Sunday of November according to the U.S. Energy Policy Act of 2005.

Additional Information about the issue resoloved by this Hotfix can be found in its Knowledge Base article at

Additional Hotfixes
Search the list of all other publicly available Visual Studio and .NET Framework Hotfixes at*

Last edited Jun 18 2008 at 2:24 AM  by codegalleryadmin, version 6
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