BUG #16123: DST not respected for America/Sao_Paulo in `timestamp` function

From: PG Bug reporting form <noreply(at)postgresql(dot)org>
To: pgsql-bugs(at)lists(dot)postgresql(dot)org
Cc: thushw(at)gmail(dot)com
Subject: BUG #16123: DST not respected for America/Sao_Paulo in `timestamp` function
Date: 2019-11-18 05:37:53
Message-ID: 16123-a657804bf8eb791c@postgresql.org
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The following bug has been logged on the website:

Bug reference: 16123
Logged by: Thushara Wijeratna
Email address: thushw(at)gmail(dot)com
PostgreSQL version: 11.5
Operating system: MacOS (Mojave)
Description:

maestro_development=# select timestamp with time zone '2019-12-01T02:00:00Z'
at time zone 'America/Sao_Paulo';
timezone
---------------------
2019-11-30 23:00:00
(1 row)

From Nov 3, America/Sao_Paulo should be offset only 2 hours from UTC due to
DTS. I would expect the timestamp to be December 1st midnight.

https://www.travelmath.com/time-zone/America/Sao_Paulo

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