Who’s going to tell him?

David Braverman
Inner Drive Technology

From: akbar--- via tz <[email protected]>
Sent: Tuesday 4 November 2025 13:08
To: [email protected]
Subject: [tz] Phoenix AZ timezone issue

🧭 Problem Summary

·         Arizona remains one of the few U.S. states that does not observe 
Daylight Saving Time (DST) since 1968.

·         However, it identifies its time zone as Mountain Standard Time (MST) 
— which does change to MDT when DST applies elsewhere.

·         Because of this, every spring and fall, Arizona’s effective time 
alignment shifts:

o    In summer, Arizona matches Pacific Daylight Time (PDT).

o    In winter, it matches Mountain Standard Time (MST).

·         This causes systemic issues in digital calendars, automated 
scheduling, flight bookings, and cross-state business coordination, requiring 
frequent manual adjustments.

💡 Recommended Solution

Create and declare a dedicated time zone: “Phoenix Standard Time.”

·         This would be a fixed, non-DST time zone officially recognized by 
IANA (the Internet Assigned Numbers Authority) and major platforms (Microsoft, 
Apple, Google).

·         All digital devices could use it as a unique time zone identifier 
that never shifts with DST — eliminating confusion and rescheduling errors.

·         It would function similarly to “UTC+7” year-round but would display 
as “Phoenix Standard Time (PST)” in software systems.

Thank you
Akbar Jaffer


[cid:[email protected]]


Akbar Jaffer
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