Daylight Saving Changes

The United States Energy Policy Act of 2005 established new rules for Daylight Savings Time (DST) in the US. These new rules change the start and end dates for DST beginning 2007.

This year, DST will start on the second Sunday of March and end on the first Sunday of November. Canada and some of the Caribbean countries are also extending their DST period to match that of the US.

The list of the affected timezones can be seen at TimeAndDate.com.

These changes affect computer systems that operate with the timezones affected by the new rules. If you work with accounts using the affected timezones, you likely need to take action to correctly interpret dates and times when using EWS.

To address this problem many software vendors have released patches for their products. The following list provides links for articles covering popular software products:

Operating Systems

• FreeBSD
• RedHat Linux
• Solaris
• Windows

Databases

• Microsoft SQL Server
• MySQL
• Oracle

Languages

• Java
• Perl
• Perl - DateTime::TimeZone module - please upgrade to the latest version from cpan.org
• PHP - Please upgrade to the latest stable release or use the latest timezonedb package (http://pecl.php.net/package/timezonedb/)

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