Re: When exactly is a TIMESTAMPTZ converted to the sessions time zone?

Thomas Kellerer <spam_eater(at)gmx(dot)net> writes:
> A recent discussion around timestamptz behaviour has lead me to question my own understanding on how a TIMESTAMPTZ is converted to the session's time zone.
> I assumed this conversion happens *on the server* before the value is sent to the client.

It's done in the datatype's output conversion function.

> A co-worker of mine claims that this is purely a client side thing, and that the server will always send the "plain" UTC value that is stored in a timestamptz column.

Your co-worker is certainly wrong so far as text output is concerned.
If you retrieve data in binary format, though, it looks like you get
the raw (un-rotated) timestamp value, so that any conversion would have
to be done on the client side.

regards, tom lane