Received: from malur.postgresql.org ([217.196.149.56])
	by arkaria.postgresql.org with esmtps
 (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256)
	(Exim 4.92)
	(envelope-from <pgsql-bugs-owner+archive@lists.postgresql.org>)
	id 1pTtRJ-0006ge-Nz
	for pgsql-bugs@arkaria.postgresql.org; Sun, 19 Feb 2023 23:49:53 +0000
Received: from localhost ([127.0.0.1] helo=malur.postgresql.org)
	by malur.postgresql.org with esmtp (Exim 4.92)
	(envelope-from <pgsql-bugs-owner+archive@lists.postgresql.org>)
	id 1pTtRI-00072n-Ay
	for pgsql-bugs@arkaria.postgresql.org; Sun, 19 Feb 2023 23:49:52 +0000
Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29])
	by malur.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256)
	(Exim 4.92)
	(envelope-from <tgl@sss.pgh.pa.us>)
	id 1pTtRI-00072e-2Y
	for pgsql-bugs@lists.postgresql.org; Sun, 19 Feb 2023 23:49:52 +0000
Received: from sss.pgh.pa.us ([66.207.139.130])
	by magus.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256)
	(Exim 4.92)
	(envelope-from <tgl@sss.pgh.pa.us>)
	id 1pTtRF-0003yr-GV
	for pgsql-bugs@lists.postgresql.org; Sun, 19 Feb 2023 23:49:51 +0000
Received: from sss1.sss.pgh.pa.us (localhost [127.0.0.1])
	by sss.pgh.pa.us (8.15.2/8.15.2) with ESMTP id 31JNnlTF3449862;
	Sun, 19 Feb 2023 18:49:47 -0500
From: Tom Lane <tgl@sss.pgh.pa.us>
To: =?UTF-8?Q?Umut_TEK=C4=B0N?= <umuttechin@gmail.com>
cc: pgsql-bugs@lists.postgresql.org
Subject: Re: Inconsistent 'at time zone' conversion
In-reply-to: 
 <CAPZcZRmcTnGPABC8o+5hwLz2wN0uHK=hG+Xj=swVvDS8i5Dekg@mail.gmail.com>
References: 
 <CAPZcZRmcTnGPABC8o+5hwLz2wN0uHK=hG+Xj=swVvDS8i5Dekg@mail.gmail.com>
Comments: In-reply-to =?UTF-8?Q?Umut_TEK=C4=B0N?= <umuttechin@gmail.com>
	message dated "Sun, 19 Feb 2023 23:36:37 +0100"
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-ID: <3449860.1676850587.1@sss.pgh.pa.us>
Date: Sun, 19 Feb 2023 18:49:47 -0500
Message-ID: <3449861.1676850587@sss.pgh.pa.us>
List-Id: <pgsql-bugs.lists.postgresql.org>
List-Help: <https://lists.postgresql.org/manage/>
List-Subscribe: <https://lists.postgresql.org/manage/>
List-Post: <mailto:pgsql-bugs@lists.postgresql.org>
List-Owner: <mailto:pgsql-bugs-owner@lists.postgresql.org>
List-Archive: <https://www.postgresql.org/list/pgsql-bugs>
Archived-At: 
 <https://www.postgresql.org/message-id/3449861.1676850587%40sss.pgh.pa.us>
Precedence: bulk

=?UTF-8?Q?Umut_TEK=C4=B0N?= <umuttechin@gmail.com> writes:
> I think I found a bug about time zones.

You're just confused about the signs of timezone offsets.
"UTC-7" is read as POSIX notation so that it means 7 hours
east of Greenwich, not west where Denver is.  See

https://www.postgresql.org/docs/current/datetime-posix-timezone-specs.html

			regards, tom lane