Postgres 15

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select version();

version

PostgreSQL 15.0 on x86_64-pc-linux-gnu, compiled by gcc (GCC) 8.5.0 20210514 (Red Hat 8.5.0-10), 64-bit

SELECT 1

show time zone;

TimeZone

GB

SHOW

SELECT now(),
       now() AT TIME ZONE 'EST' AS est,
       now() AT TIME ZONE 'EDT' AS edt,
       now() AT TIME ZONE 'CST' AS cst,
       now() AT TIME ZONE 'CDT' AS cdt,
       now()::timestamp AT TIME ZONE 'EDT' AS timestamp_without_tz,
       now()::timestamptz AT TIME ZONE 'EDT' AS timestamptz;

now
est
edt
cst
cdt
timestamp_without_tz
timestamptz

2024-03-10 21:56:41.364758+00
2024-03-10 16:56:41.364758
2024-03-10 17:56:41.364758
2024-03-10 15:56:41.364758
2024-03-10 16:56:41.364758
2024-03-11 01:56:41.364758+00
2024-03-10 17:56:41.364758

SELECT 1