The Official Journal of the European Union , commonly referred to as "the OJ", is the official gazette of the EU and the formal source of EU legislative information. The OJ is published daily in all the official languages of the EU .
The OJ was published for the first time in 1952 as a single series (A). In 1958 the A series was replaced by the P series. The P series existed from 1958 until 1967. Since January 1968 the OJ has been published in two separate series, L (Legislation) and C (Information and Notices).