North Decimal Degree 90.000000. South Decimal Degree 0.000000. East Decimal Degree 180.000000. West Decimal Degree -180.000000. Polar stereogaphic projection. "Pending postwar settlemets, political boundaries shown are as of 1935. Map is: No. GH-8a . Base no. 1R1. Sources: Britannica Atlas and Goode's School Atlas, Rand McNally.