Extended Daylight Saving Time Information

This page consolidates CalConnect pages concerning Extended Daylight Saving Time (EDST), the changes to the start and end dates of Daylight Saving Time mandated by the Energy Policy Act of 2005 and which take effect in 2007.

CalConnect EDST Reflections and Recommendations:

This document, prepared by the CalConnect DST Ad Hoc Committee, reflects on the impact of the Extended Daylight Savings Time change to the start of DST in the United States to March 11, 2007, and provides recommendations for the coming change back on November 4, plus longer term recommendations for timezone management in the future.

Extended Daylight Saving Time Review and Considerations:

This document provides a review of the Daylight Saving Time changes and the potential impact of this change on computer systems and devices. It is intended as a review and reference for users and in particular for systems administrators who may need to make necessary updates to their systems.

Extended Daylight Saving Time Links, Advisories and Changes:

This document is a compilation of links to vendor-provided advisories, technical notes, change documents, and the like. Its primary purpose is to try and consolidate in one place links to references for Calendaring and Scheduling systems and major underlying operating systems, but links for related products and services will be provided when possible.

We realize that this compilation is far from complete, and is only as useful as it is inclusive, and solicit additional information which belongs in this compiliation. Please send references and URLs to DST Referrals.

Extended Daylight Saving Time Advisory Notice:

This document, developed just prior to the signing of the Energy Policy Act into law, was an advisory intended to explain the impact of the Act's proposed changes to Daylight Saving Time and CalConnect's concerns as to that impact and the necessary actions which needed to be taken by vendors and customers prior to the first DST change coming into effect.