Re: Was deprecation of DATE_RFC72 31 and DateTimeInterface::RFC7231 a mistake?
| From: | Rowan Tommins [IMSoP] | Date: | Wed, 21 Jan 2026 16:21:40 +0000 |
| Subject: | Re: Was deprecation of DATE_RFC72 31 and DateTimeInterface::RFC7231 a mistake? | ||
| References: | 1 2 3 4 | Groups: | php.internals |
| Request: | Send a blank email to internals+get-129814@lists.php.net to get a copy of this message | ||
On 21 January 2026 15:59:50 GMT, Andreas Heigl <andreas@heigl.org> wrote:
>That is about the same as saying "Prices are indicated in Euro by the three-letter
>abbreviation for US-Dollar, 'USD', a predecessessor of the EUR name"
That is a gross exaggeration. Wikipedia summarises it like this:
> English speakers often use GMT as a synonym for UTC. For navigation, it is considered
> equivalent to UT1 (the modern form of mean solar time at 0° longitude); but this meaning can differ
> from UTC by up to 0.9 s. The term "GMT" should thus not be used for purposes that require
> precision.
The format we're talking about does not have fractional seconds, so we're talking about a
potential difference of 1 second between different interpretations of what "GMT" could
mean.
Rowan Tommins
[IMSoP]