

I know Microsoft has to be annoyed by the change made by Congress, just as we are. Get more information on How to handle dates and times that include DST Get more information on Preparing for Daylight Saving Time changes in 2007 CRT Updates are available for the CRTs which ship with every currently supported version of Visual Studio and CRT updates are also available for the CRT which ships with Windows to continue to correctly handle DST conversions in U.S.

Windows Updates are available which allow Windows to correctly calculate time based on the new DST rules. If the TZ environment variably is not set, the CRT calls the Windows APIs and exhibits Windows behavior. The C Run-Time (CRT) performs its own time handling only when the TZ environment variable is set, or when an underlying OS API time call fails. on the second Sunday in March and end at 2:00 A.M on the first Sunday in November. Starting from March 2007, the Daylight Savings Time (DST) start date and end date for the United States will change.
