<Tr> <Td> 66 ° 34 ′ N 17 ° 59 ′ W ﻿ / ﻿ 66.567 ° N 17.983 ° W ﻿ / 66.567; - 17.983 ﻿ (Greenland Sea, Atlantic Ocean) </Td> <Th> Atlantic Ocean </Th> <Td> Greenland Sea Norwegian Sea--from 66 ° 34 ′ N 12 ° 32 ′ W ﻿ / ﻿ 66.567 ° N 12.533 ° W ﻿ / 66.567; - 12.533 ﻿ (Norwegian Sea) </Td> </Tr> <Ul> <Li> <P> A sign on the Vikingen island marking the Arctic Circle in Norway </P> </Li> <Li> <P> The Arctic Circle on Grímsey in Iceland </P> </Li> <Li> <P> Arctic Circle sign by the Inland Line railway, Sweden </P> </Li> </Ul> <Li> <P> A sign on the Vikingen island marking the Arctic Circle in Norway </P> </Li> <P> A sign on the Vikingen island marking the Arctic Circle in Norway </P>

What is the longitude of the arctic circle