<Tr> <Td> </Td> <Td> San Marino </Td> <Td> 000000001992 - 03 - 02 - 0000 2 March 1992 </Td> <Td> ~! </Td> </Tr> <Tr> <Td> </Td> <Td> Sao Tome and Principe </Td> <Td> 000000001975 - 09 - 16 - 0000 16 September 1975 </Td> <Td> ~! </Td> </Tr> <Tr> <Td> </Td> <Td> Saudi Arabia </Td> <Td> 000000001945 - 10 - 24 - 0000 24 October 1945 </Td> <Td> ~! </Td> </Tr> <Tr> <Td> </Td> <Td> Senegal </Td> <Td> 000000001960 - 09 - 28 - 0000 28 September 1960 </Td> <Td> ~! </Td> </Tr>

When was saudi arabia admitted to united nations