Why does Postgres add an hour to a date?

Question

PostgreSQL

From the client I accept the date and time as strings, I glue them together on the server just like I date+" "+time+":00".use jodatime DateTime and this format "dd.MM.YYYY HH:mm:ss"to get a date object. Then I save everything in postgres via eclipse link. A converter to sql.Timestamp has been written for greater convenience.
An example of a received date "2016-02-04 15:30:00"in postgres.
I send it to him "2016-02-04 14:30:00". Because of this, I came to the conclusion that postgres itself increases the date by an hour. The date is stored in timestamp without timezone. jodatime latest version 2.9.2.

Answer 1

I suspect that the same converter is doing you a disservice. Have you covered it with unit tests? I do not think that PostgreSQL is engaged in amateur activities in this regard.

Answer 2

Make a pure SQL query to the database (albeit corny from the CLI) and see the result. Perhaps your TZ connection is set incorrectly. In any case, you need to start with a bare SQL query by hand.