IMHO, AI slop doesn't warrant much of a response... but just to be pedantic:

- IANA zone America/Phoenix covers the primary concern

- Phoenix uses UTC-7, not UTC+7

- IANA doesn't deal with display names

- "Phoenix Standard Time (PST)" would be abhorrent for a display name, confused easily with "Pacific Standard Time (PST)" (UTC-8)

- In the United States, the English names of time zones are regulated by congress via 49 CFR 71, so one cannot just propose new display names willy-nilly.

Did I miss anything? 

On Tue, Nov 4, 2025 at 11:39 AM David Braverman via tz <tz@iana.org> wrote:

Sorry, that wasn’t fair.

 

Akbar, the time zone you’re looking for is America/Phoenix. It’s in the northamerica data file and it goes back to the advent of standard time in 1883.

 

David Braverman

 

From: David Braverman via tz <tz@iana.org>
Sent: Tuesday 4 November 2025 13:35
To: tz@iana.org
Subject: [tz] Re: Phoenix AZ timezone issue

 

Who’s going to tell him?

 

David Braverman

Inner Drive Technology

 

From: akbar--- via tz <tz@iana.org>
Sent: Tuesday 4 November 2025 13:08
To: tz@iana.org
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

 

 

Akbar Jaffer

Office: (415) 335-6950

Mobile: (650) 430-0232
Web: Marketing-QA.com

Meeting: Book time W/Akbar

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