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KB932304 - Visual C++ .NET 2002 Service Pack 1 C runtime DST 2007 update
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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
FIX: Visual C++ .NET 2002 Service Pack 1 C runtime daylight saving time 2007 update for the TZ environment variable problem
When you use the TZ environment variable in the Microsoft Visual C++ .NET 2002 C Run-Time (CRT), the localtime function and _localtime64 function do not correctly recognize daylight saving time (DST). These functions do not recognize DST as starting on the second Sunday of March in 2007 and ending on the first Sunday of November in 2007, according to the United States Energy Policy Act of 2005. Instead, these functions recognize DST as starting on the first Sunday of April and ending on the last Sunday of October.
Additional Information about the issue resolved by this Hotfix can be found in its Knowledge Base article at
Search the list of all other publicly available Visual Studio and .NET Framework Hotfixes at
Jul 1 2008 at 12:13 AM
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Tue Mar 6 2007 at 8:00 AM
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