<Tr> <Td> Oslo </Td> <Td> Norway </Td> <Td> Europe </Td> <Td>--</Td> <Td> W006 VI </Td> <Td> 1952 </Td> <Td> 000000002017 - 02 - 14 - 0000 February 14 </Td> <Td> 000000002017 - 02 - 25 - 0000 February 25 </Td> </Tr> <Tr> <Td> Helsinki </Td> <Td> Finland </Td> <Td> Europe </Td> <Td> S015 XV </Td> <Td>--</Td> <Td> 000000002017 - 07 - 19 - 0000 July 19 </Td> <Td> 000000002017 - 08 - 03 - 0000 August 3 </Td> </Tr> <Tr> <Td> Cortina d'Ampezzo </Td> <Td> Italy </Td> <Td> Europe </Td> <Td>--</Td> <Td> W007 VII </Td> <Td> 1956 </Td> <Td> 000000002017 - 01 - 26 - 0000 January 26 </Td> <Td> 000000002017 - 02 - 05 - 0000 February 5 </Td> </Tr> <Tr> <Td> Melbourne Stockholm </Td> <Td> Australia Sweden </Td> <Td> Oceania Europe </Td> <Td> S016 XVI </Td> <Td>--</Td> <Td> 000000002017 - 11 - 22 - 0000 November 22 000000002017 - 06 - 10 - 0000 June 10 </Td> <Td> 000000002017 - 12 - 08 - 0000 December 8 000000002017 - 06 - 17 - 0000 June 17 </Td> </Tr>

Where have the winter olympics been held timeline