Categories Royal Decree Royal Decree 59/98 Granting Omani Nationality 1998/59 59/1998 98/59 59/98 Post author By admin Post date September 14, 1998 Arabic Auto Translate Published in Official Gazette 631 issued on 15 September 1998. ← Agreement between the Government of the Sultanate of Oman and the Republic of Singapore for the Avoidance of Double Taxation of Income Derived from International Air Transport → Royal Decree 64/98 Adopting the Amendments to the General Budget of the State for the Year 1997