Daylight Saving Time Help and Support Center

Beginning in 2007, daylight saving time (DST) will be extended in the United States. DST will start on March 11, 2007, which is three weeks earlier than usual, and it will end on November 4, 2007, which is one week later than usual. This results in a new DST period that is four weeks longer than in previous years. Unless certain updates are applied to your computer, the time zone settings for your computer's system clock may be incorrect during this four-week period. In particular, you must make sure that both your Windows operating system and your calendar programs are updated.

To All Users Using Windows XP

Download and Run the file XP-DST_UPDATE-SP2. You will have to restart your computer for the New Daylight Savings Time to Take Effect

Please Note

The Outlook Patch is only for the users who have outlook client installed on there PCs. The documentation will guide them step by step on the outlook patch

Outlook Calendar Update Documentation

Outlook_Calendar_Update

DST rule changes for the United States and most of Canada are already available in Mac OS X 10.4.5 or later

That's right, the 2007 time zone and Daylight Saving Time rule changes for the United States and most of Canada are already available in Mac OS X 10.4.5 (released February, 2006) or later. However, some additional regions that recently adopted time zone and DST changes are available in the February, 2007 Daylight Saving Time Update, detailed below.

February, 2007 Daylight Saving Time Update

Apple is providing software updates for Mac OS X 10.3, 10.4 and later based on worldwide time zone information available as of January 8, 2007. To make sure that your clock maintains the proper time, simply install the updates that are shown for your computer in Software Update. You should install these updates even if your computer is used in a time zone that is not affected. For more details about the available updates, or if you have an earlier Mac OS version, see below.

Mac OS X and Mac OS X Server versions 10.0.x through 10.2.8

If you're still using Mac OS X 10.2.8 or earlier, you can adjust your clock manually using Date & Time preferences. Deselect the option to set date and time automatically, then set the time for your local time zone as needed.

Mac OS 9.2 or earlier

Still using Mac OS 9.2? Use the Date and Time control panel to deselect the option to observe Daylight Saving Time changes automatically, then enable Daylight Saving Time manually. Applications that run in the Classic environment of Mac OS X will honor the Daylight Saving Time setting in Mac OS X.