[tz] Tzdb and the Sunshine Protection Act

[Eliot Lear]

RFC 2822 is already obsolete, and this part was somewhat fixed in RFC 
5322.  See Section 3.3 of that document, in that those old zone names 
are marked as obsolete, but allowed.  Pete can say more if he wants.

Eliot

On 03.03.23 00:04, Tim Parenti via tz wrote:
>
> On Thu, 2 Mar 2023 at 17:45, Paul Eggert via tz <tz at iana.org> wrote:
>
>     Whether the adjusted time in (say) New York would be abbreviated "EST"
>     or "AST" or "EDT" is up to common practice.
>
>     […]
>
>     At some point "EST" might become the
>     best of the alternatives.
>
>
> Worth considering that, if "EST" were to become standard for -04, it 
> would require modifications to supported, but obsoleted, formats in 
> RFC 2822 §4.3, which state:
>
> EDT is semantically equivalent to -0400
> EST is semantically equivalent to -0500
> CDT is semantically equivalent to -0500
> CST is semantically equivalent to -0600
> MDT is semantically equivalent to -0600
> MST is semantically equivalent to -0700
> PDT is semantically equivalent to -0700
> PST is semantically equivalent to -0800
>
> --
> Tim Parenti
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