New Daylight Saving Time Rules Start this Weekend

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The new rules for when Daylight Saving Time (DST) begins and ends are going into effect this weekend, and anyone who wants their mobile device’s clock to automatically make the change correctly will need to update their handheld or smartphone.

Fortunately, Microsoft, Palm, and RIM have all released software patches for their various models. Naturally, all of these can be downloaded for free.


The patch for Windows Mobile Smartphones and Pocket PCs can be found on Microsoft’s web site.

Also available from that same page are tools that will update Microsoft Windows and Microsoft Outlook with the new DST rules.


Palm has released a DST update for its handhelds and smartphones dating back several years. This includes both Palm OS and Windows Mobile devices.

It can be downloaded from this company’s web site.

Step-by-step instructions for manually updating Palm’s recent models with the new DST rules — written by one of Brighthand‘s senior moderators — can be found in the Forums.


BlackBerry users who want to update their device with a Daylight Saving Time patch can read the instructions for doing so on on RIM’s web site.

This company has only recently introduced a patch for models running software versions prior to v4.0.0.

Why Is This Necessary?

Previously DST began on the first Sunday in April, and ended on the last Sunday of October. Beginning this year, though, it will start on the second Sunday in March (March 11, 2007), and will changes back to standard time on the first Sunday in November (November 4, 2007).

The idea behind the Energy Policy Act, enacted by the U.S. Congress signed into law by Pres. Bush in 2005, is to save energy.

But it will require a large number of computers — including handhelds and smartphones — to have an update, as these devices use the old rules for when DST begins and ends. Otherwise, calendar events and email messages will indicate an hour off the actual time.




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