May 20 (Reuters) - * OPEC and its allies are considering moving the date of their next oil policy meeting in Vienna to July 3-4 from June 25-26, two OPEC sources said on Monday.
* The date change has been proposed but has not been officially confirmed, the sources said.
* The Organization of the Petroleum Exporting Countries (OPEC), Russia and other non-member producers have reduced output by 1.2 million barrels per day since Jan. 1. The meeting is to decide whether to extend the pact or adjust it. (Reporting by Reuters Editing by David Goodman)