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Wed, 21 Jan 2026 11:21:43 -0500 (EST) Date: Wed, 21 Jan 2026 16:21:40 +0000 To: internals@lists.php.net Subject: =?US-ASCII?Q?Re=3A_=5BPHP-DEV=5D_Was_deprecation_of_DATE=5FRFC72?= =?US-ASCII?Q?31_and_DateTimeInterface=3A=3ARFC7231_a_mistake=3F?= User-Agent: K-9 Mail for Android In-Reply-To: <5bb25b95-7a4c-4c01-b188-4895cd0a012b@heigl.org> References: <795bff15-ebb1-4cf8-a189-15ca93467ea1@heigl.org> <0c3bed9e14187b434650debe07c0dd0d@bastelstu.be> <5bb25b95-7a4c-4c01-b188-4895cd0a012b@heigl.org> Message-ID: <3A90B3B3-13A7-4DA7-A819-8A9904028B81@rwec.co.uk> Precedence: list list-help: list-unsubscribe: list-post: List-Id: x-ms-reactions: disallow MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable From: imsop.php@rwec.co.uk ("Rowan Tommins [IMSoP]") On 21 January 2026 15:59:50 GMT, Andreas Heigl wrote: >That is about the same as saying "Prices are indicated in Euro by the thr= ee-letter abbreviation for US-Dollar, 'USD', a predecessessor of the EUR na= me" That is a gross exaggeration=2E Wikipedia summarises it like this:=20 > English speakers often use GMT as a synonym for UTC=2E For navigation, i= t is considered equivalent to UT1 (the modern form of mean solar time at 0= =C2=B0 longitude); but this meaning can differ from UTC by up to 0=2E9 s=2E= The term "GMT" should thus not be used for purposes that require precision= =2E The format we're talking about does not have fractional seconds, so we're = talking about a potential difference of 1 second between different interpre= tations of what "GMT" could mean=2E Rowan Tommins [IMSoP]