For 10 points, give this name which generally signifies that a geographical feature was discovered on the anniversary of Jesus' birth.
One geographical feature with this name is located at the extreme northeast of the Loranchet Peninsula on Kerguelen Island in the southern Indian Ocean and was discovered on the same day that Washington crossed the Delaware. An island with this name southwest of Java was transferred from Singapore to Australia and has since been used as an immigrant internment camp. A different island with this name is also called Kiritimati, which is actually pronounced identically to this in the native Gilbertese. This name also applies to the South African region containing Pietermaritzburg and Durban. In that case, the name was bestowed by Vasco de Gama in 1497, and the region was its own province through most of the 20th century but was enlarged to include the Bantustan of Kwa-Zulu in 1994. For 10 points, give this name which generally signifies that a geographical feature was discovered on the anniversary of Jesus' birth.
One geographical feature with this name is located at the extreme northeast of the Loranchet Peninsula on Kerguelen Island in the southern Indian Ocean and was discovered on the same day that Washington crossed the Delaware.
Christmas or Natal (accept either)