August 2013 DST Cumulative Update for Windows operating systems

This post has been republished via RSS; it originally appeared at: Daylight Saving Time & Time Zone articles.

The August 2013 DST Cumulative Update for Windows Operating Systems has been published on Microsoft Download Center. It contains the following changes:

• Libya Standard Time:

New DST starts on the last Friday of March at 2:00 A.M., and ends on the last Friday of October at 2:00 A.M. This new DST rule is introduced in 2013 and the new dedicated time zone is also added (UTC+1 Tripoli).

• Israel Standard Time:

New DST starts on the Friday before the last Sunday of March, and ends on the last Sunday of October at 2:00 A.M. This new DST rule is applicable from 2013 to 2023.

• Pacific S.A. Standard Time:

New DST ends on April 27, 2013, and starts on September 7, 2013. This new DST rule is applicable to 2013 only.

• Paraguay Standard Time:

New DST ends on March 23, 2013. This change incorporates the shortened DST rules for Paraguay in 2013.

• West Asia Standard Time:

This change adds Ashgabat to the display name of the “West Asian Standard Time” time zone.

• Morocco Standard Time:

The change in the August DST Cumulative Update accounts only for History Correction after the DST 2013 Ramadan fix-it solution that was shipped in June 2013 (KB 2860495).

For more information on these adjustments, refer to this Microsoft Knowledge Base article: http://support.microsoft.com/kb/2863058 .