What is timestamp without time zone?
TIMESTAMP WITHOUT TIME ZONE values are not a point on the timeline, not actual moments. They represent a rough idea about potential moments, possible points on the timeline along a range of about 26-27 hours (the range of time zones around the globe).
What timezone does PostgreSQL use?
UTC
PostgreSQL assumes your local time zone for any type containing only date or time. All timezone-aware dates and times are stored internally in UTC . They are converted to local time in the zone specified by the TimeZone configuration parameter before being displayed to the client.
What happens if there is no time zone in a timestamp?
If no time zone is stated in the input string, then it is assumed to be in the time zone indicated by the system’s TimeZone parameter, and is converted to UTC using the offset for the timezone zone. To give a simple analogy, a timestamptz value represents an instant in time, the same instant for anyone viewing it.
Why does PostgreSQL not show the time zone?
The output that is missing timezone information is due to the application itself (SQLWorkbenchJ). Querying from psql will show the timezone You can see in the above no tz in output. Now let’s change to use a with time zone. What’s your result of SHOW TIME ZONE? However, we have to know what you’re asking.
What does the timestamp data in PostgreSQL mean?
The timestamp data type allows you to store both date and time. However, it does not have any time zone data. It means that when you change your database server’s time zone, the timestamp value stored in the database does not change. The timestamptz data is the timestamp with time zone.
Can a time zone be rendered as local time?
With a time zone as part of the value, the value can be rendered as a local time in the client. Without a time zone as part of the value, the obvious default time zone is UTC, so it is rendered for that time zone. The behaviour differs depending on at least three factors: The timezone setting in the client.