Daylight Savings Time Changes

Just a reminder that the clocks will go forward on March 11, 2007.

The US Energy Policy Act of 2005, passed last year, extended Daylight Saving Time (DST) in the U.S. by around four weeks. As a result, DST will start three weeks earlier on March 11, 2007, and end one week later on November 4, 2007.

While I for one will prefer the extra hour of daylight in the afternoon, it does mean that some computers may have a problem.

Normally, your computer automatically adjusts it’s clock for DST but this year, unless your software has been patched by the manufacturer, it will remain on the previous schedule.

If you have a Microsoft Windows Vista operating system then the new calendar is already built in. If you have Windows XP and have automatic updates turned on then you too already have the fix. Microsoft have a support note that you can read.
For Apple users, if you have Mac OS X 10.4.5 or later you should be fine although you may need to install the recommended updates from Apple to reflect similar changes happening in other countries. Read Apple’s support notes for more information.

For mobile device owners such as the Treo from Palm, you can download an update from the Palm website.

Similarly users of the Blackberry can also download a patch.
The problem will occur for owners of computers and other devices that are not configured or do not have automatic updates. If you are not sure about your device then head over to the manufacturer’s website and download the patch.

If you regularly have phone contact overseas be aware that the DST timing changes only affect the US. That means that the time difference between the US and the countries you work with will be different for two weeks. For example in the UK, DST (or “Summer Time”) does not occur until March 25th so the time difference will be 7 hours and not 8.

Note too that this year, European Central Time and UK time will change on the same date. In previous years the UK was always a week behind.

Also read the excellent article by Jonathan Spira on this topic at “The Collaboration Loop”


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