<Table> <Tr> <Th_colspan="2"> Detroit Lions </Th> </Tr> <Tr> <Td_colspan="2"> Current season </Td> </Tr> <Tr> <Td_colspan="2"> Established July 12, 1930; 87 years ago (July 12, 1930) First season: 1930 Play in Ford Field Detroit, Michigan Headquartered in Allen Park, Michigan </Td> </Tr> <Tr> <Th_colspan="2"> </Th> </Tr> <Tr> <Td_colspan="2"> <Table> <Tr> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td> Logo </Td> <Td> Wordmark </Td> </Tr> </Table> </Td> </Tr> <Tr> <Th_colspan="2"> League / conference affiliations </Th> </Tr> <Tr> <Td_colspan="2"> <P> National Football League (1930--present) </P> <Ul> <Li> Western Division (1933--1949) </Li> <Li> National Conference (1950--1952) </Li> <Li> Western Conference (1953--1969) <Ul> <Li> Central Division (1967--1969) </Li> </Ul> </Li> <Li> National Football Conference (1970--present) <Ul> <Li> NFC Central (1970--2001) </Li> <Li> NFC North (2002--present) </Li> </Ul> </Li> </Ul> </Td> </Tr> <Tr> <Td_colspan="2"> Current uniform </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> Team colors </Th> <Td> Honolulu Blue, Silver </Td> </Tr> <Tr> <Th> Fight song </Th> <Td> Gridiron Heroes </Td> </Tr> <Tr> <Th> Mascot </Th> <Td> Roary the Lion Theo "Gridiron" Spight </Td> </Tr> <Tr> <Th_colspan="2"> Personnel </Th> </Tr> <Tr> <Th> Owner (s) </Th> <Td> Martha Firestone Ford </Td> </Tr> <Tr> <Th> Chairman </Th> <Td> Martha Firestone Ford </Td> </Tr> <Tr> <Th> President </Th> <Td> Rod Wood </Td> </Tr> <Tr> <Th> General manager </Th> <Td> Bob Quinn </Td> </Tr> <Tr> <Th> Head coach </Th> <Td> Jim Caldwell </Td> </Tr> <Tr> <Th_colspan="2"> Team history </Th> </Tr> <Tr> <Td_colspan="2"> <Ul> <Li> Portsmouth Spartans (1930--1933) </Li> <Li> Detroit Lions (1934--present) </Li> </Ul> </Td> </Tr> <Tr> <Th_colspan="2"> Championships </Th> </Tr> <Tr> <Td_colspan="2"> <P> League championships (4) </P> <Ul> <Li> NFL Championships (pre--1970 AFL--NFL merger) (4) 1935, 1952, 1953, 1957 </Li> </Ul> </Td> </Tr> <Tr> <Td_colspan="2"> <P> Conference championships (4) </P> <Ul> <Li> NFL National: 1952 </Li> <Li> NFL Western: 1953, 1954, 1957 </Li> </Ul> </Td> </Tr> <Tr> <Td_colspan="2"> <P> Division championships (4) </P> <Ul> <Li> NFL West: 1935 </Li> <Li> NFC Central: 1983, 1991, 1993 </Li> </Ul> </Td> </Tr> <Tr> <Th_colspan="2"> Playoff appearances (18) </Th> </Tr> <Tr> <Td_colspan="2"> <Ul> <Li> NFL: 1932, 1935, 1952, 1953, 1954, 1957, 1970, 1982, 1983, 1991, 1993, 1994, 1995, 1997, 1999, 2011, 2014, 2016 </Li> </Ul> </Td> </Tr> <Tr> <Th_colspan="2"> Home fields </Th> </Tr> <Tr> <Td_colspan="2"> <Ul> <Li> Universal Stadium (1930--1933) </Li> <Li> University of Detroit Stadium (1934--1940) </Li> <Li> Tiger Stadium (1938--1939, 1941--1974) </Li> <Li> Pontiac Silverdome (1975--2001) </Li> <Li> Ford Field (2002--present) </Li> </Ul> </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Detroit Lions </Th> </Tr>

When did the lions win the nfl championship