<P> Coordinates: 21 ° N 57 ° E ﻿ / ﻿ 21 ° N 57 ° E ﻿ / 21; 57 </P> <Table> <Tr> <Th_colspan="2"> Sultanate of Oman سلطنة عُمان (Arabic) Salṭanat ʻUmān </Th> </Tr> <Tr> <Td_colspan="2"> Flag National emblem </Td> </Tr> <Tr> <Td_colspan="2"> Anthem: نشيد السلام السلطاني "as - Salām as - Sultānī" "Sultanic Salutation" </Td> </Tr> <Tr> <Td_colspan="2"> Location of Oman in the Arabian Peninsula (Red) </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> Capital and largest city </Th> <Td> Muscat 23 ° 36 ′ N 58 ° 33 ′ E ﻿ / ﻿ 23.600 ° N 58.550 ° E ﻿ / 23.600; 58.550 </Td> </Tr> <Tr> <Th> Official languages </Th> <Td> Arabic </Td> </Tr> <Tr> <Th> Religion </Th> <Td> Islam </Td> </Tr> <Tr> <Th> Demonym </Th> <Td> Omani </Td> </Tr> <Tr> <Th> Government </Th> <Td> Unitary parliamentary absolute monarchy </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> Sultan </Th> <Td> Qaboos bin Said al Said </Td> </Tr> <Tr> <Th> Deputy Prime Minister </Th> <Td> Fahd bin Mahmoud al Said </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> Legislature </Th> <Td> Parliament </Td> </Tr> <Tr> <Th> Upper house </Th> <Td> Council of State (Majlis al - Dawla) </Td> </Tr> <Tr> <Th> Lower house </Th> <Td> Consultative Assembly (Majlis al - Shura) </Td> </Tr> <Tr> <Th_colspan="2"> Establishment </Th> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> The Azd tribe migration </Th> <Td> 130 </Td> </Tr> <Tr> <Th> Al - Julanda </Th> <Td> 629 </Td> </Tr> <Tr> <Th> Imamate established </Th> <Td> 751 </Td> </Tr> <Tr> <Th> Nabhani dynasty </Th> <Td> 1145 </Td> </Tr> <Tr> <Th> Yaruba dynasty </Th> <Td> 1624 </Td> </Tr> <Tr> <Th> House of Al Said </Th> <Td> 1744 </Td> </Tr> <Tr> <Th> Muscat and Oman </Th> <Td> 8 January 1820 </Td> </Tr> <Tr> <Th> Dhofar Rebellion </Th> <Td> 9 June 1965--11 December 1975 </Td> </Tr> <Tr> <Th> Sultanate of Oman </Th> <Td> 9 August 1970 </Td> </Tr> <Tr> <Th> Admitted to the United Nations </Th> <Td> 7 October 1971 </Td> </Tr> <Tr> <Th> Current constitution </Th> <Td> 6 November 1996 </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th_colspan="2"> Area </Th> </Tr> <Tr> <Th> Total </Th> <Td> 309,500 km (119,500 sq mi) (70th) </Td> </Tr> <Tr> <Th> Water (%) </Th> <Td> negligible </Td> </Tr> <Tr> <Th_colspan="2"> Population </Th> </Tr> <Tr> <Th> 2016 estimate </Th> <Td> 4,424,762 (125th) </Td> </Tr> <Tr> <Th> 2010 census </Th> <Td> 2,773,479 </Td> </Tr> <Tr> <Th> Density </Th> <Td> 15 / km (38.8 / sq mi) (214th) </Td> </Tr> <Tr> <Th> GDP (PPP) </Th> <Td> 2017 estimate </Td> </Tr> <Tr> <Th> Total </Th> <Td> $189.582 billion </Td> </Tr> <Tr> <Th> Per capita </Th> <Td> $46,475 </Td> </Tr> <Tr> <Th> GDP (nominal) </Th> <Td> 2017 estimate </Td> </Tr> <Tr> <Th> Total </Th> <Td> $71.325 billion </Td> </Tr> <Tr> <Th> Per capita </Th> <Td> $17,485 </Td> </Tr> <Tr> <Th> HDI (2015) </Th> <Td> 0.796 high 52nd </Td> </Tr> <Tr> <Th> Currency </Th> <Td> Rial (OMR) </Td> </Tr> <Tr> <Th> Time zone </Th> <Td> GST (UTC + 4) </Td> </Tr> <Tr> <Th> Drives on the </Th> <Td> right </Td> </Tr> <Tr> <Th> Calling code </Th> <Td> + 968 </Td> </Tr> <Tr> <Th> ISO 3166 code </Th> <Td> OM </Td> </Tr> <Tr> <Th> Internet TLD </Th> <Td>. om, عمان . </Td> </Tr> <Tr> <Td_colspan="2"> Website www.oman.om </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Sultanate of Oman سلطنة عُمان (Arabic) Salṭanat ʻUmān </Th> </Tr>

When was oman given the official name sultanate of oman