Subject: Re: bug#32288: date(1) Produces ISO 8601 it Won't Take Back.
From: Paul Eggert <[email-masked]>
To: Ralph Corderoy <[email-masked]>, [email-masked]
Date: Sun, 29 Jul 2018 19:00:01 -0700
List-Id: <debbugs-submit.debbugs.gnu.org>

On 07/27/2018 04:34 AM, Ralph Corderoy wrote:
>     $ date -uIs -d @-62135596801
>     0000-12-31T23:59:59+00:00                           
>     $ date -uIs -d @0000-12-31T23:59:59+00:00
>     date: invalid date ‘@0000-12-31T23:59:59+00:00’     
>     $
>
> If date thinks it's valid ISO 8601 when it outputs it,
> I'd expect it to be considered valid input to take back.

As it would have, if you had actually given back exactly what you gave
it. But you prepended '@'.