Baffin Bay earthquakes of magnitude 6 have occurred here since 1933. The latest strong earthquake occurred on 15 April 2010 and had the magnitude of 5.1. Baffin Bay is an arm of the Atlantic Ocean bounded by the Baffin Island in the west, Greenland in the east, and Ellesmere Island in the north. It connects to the Atlantic through the Davis Strait, and to the Arctic through several narrow channels of Nares Strait. It is a northwestern extension of the North Atlantic and Labrador Sea. It can also be viewed as a long strait separating Baffin Island and Greenland. The bay is
Baffin Island at a similar latitude. Sea ice surrounds the island for most of the year, and only disappears completely from the north coast for short unpredictable periods from mid- to late June until the end of September. Most of Baffin Island lies above the Arctic Circle and all the communities from Pangnirtung northwards have polar night in winter and the midnight sun in summer. The eastern community of Clyde River has twilight instead of night from April 26 until May 13, continuous sunlight for 2½ months from May 14 to July 28, then twilight instead of night from July 29 until