Admiral Chester W. Nimitz, appointed commander of the U.S. Pacific Fleet on December 17, arrives at Pearl Harbor.

Chester William Nimitz was a fleet admiral in the United States Navy. He played a major role in the naval history of World War II as Commander in Chief, US Pacific Fleet, and Commander in Chief, Pacific Ocean Areas, commanding Allied air, land, and sea forces during World War II.

The United States Pacific Fleet (USPACFLT) is a theater-level component command of the United States Navy, located in the Pacific Ocean. It provides naval forces to the Indo-Pacific Command. Fleet headquarters is at Joint Base Pearl Harbor–Hickam, Hawaii, with large secondary facilities at Naval Air Station North Island, California.

December 25 is the 359th day of the year in the Gregorian calendar; six days remain until the end of the year.