Categories Royal Decree Royal Decree 13/92 Granting Omani Nationality 1992/13 13/1992 92/13 13/92 Post author By admin Post date February 12, 1992 Arabic Auto Translate Published in Official Gazette 473 issued on 15 February 1992. ← Royal Decree 8/92 Promulgating the Muscat Municipality Law → Royal Decree 18/92 Determining the Competences of the Ministry of Electricity and Water