Which timestamp type should I choose in a PostgreSQL database?

Question

I would like to define a best practice for storing timestamps in my Postgres database in the context of a multi-timezone project.

I can

1. choose T

Answer 1

My preference is towards option 3, as Postgres can then do al ot of the work recalculating timestamps relative to timezone for you, whereas with the other two you'll have to do that yourself. The extra storage overhead of storing the timestamp with a timezone is really negligible unless you're talking millions of records, in which case you probably already have pretty meaty storage requirements anyway.