when was battle of rennell island fought?
29–30 January 1943
Battle of Rennell Island
The took place on 29–30 January 1943. 
wiki:13290688
Battle of Rennell Island [SEP] Introduction
The took place on 29–30 January 1943. It was the last major naval engagement between the United States Navy and the Imperial Japanese Navy during the Guadalcanal Campaign of World War II. It occurred in the South Pacific between Rennell Island and Guadalcanal in the southern Solomon Islands. In the battle, Japanese naval land-based torpedo bombers, seeking to provide protection for the impending evacuation of Japanese forces from Guadalcanal, made several attacks over two days on U.S. warships operating as a task force south of this island. In addition to approaching Guadalcanal with the objective of engaging any Japanese ships that might come into range, the U.S.