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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.

Major Operating System Vendors

Apple macOS

  • Apple Support

  • Software Update mechanism handles timezone updates automatically

Linux

Most Linux distributions update timezone data through the system package manager. Check your distribution’s documentation for updating the timezone data packages (typically tzdata or timezone).

Major Calendaring Vendors

For vendor-specific information about their products and DST changes, please contact the vendor directly or check their support websites.

Reporting Issues

If you discover issues related to DST changes, please report them to:

  • The vendor of the affected product

  • CalConnect for standards-related issues

Keeping This Page Current

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

  • /resources/#daylight-saving-time[Daylight Saving Time Overview]

  • /resources/#daylight-saving-timeextended-daylight-saving-time-review-and-considerations/[Review and Considerations]