Tsutomu Yamaguchi, Japanese engineer (born 1916)

Tsutomu Yamaguchi was a Japanese marine engineer who survived both the Hiroshima and Nagasaki atomic bombings during World War II. Although at least 160 people are known to have been affected by both bombings, he is the only person to have been officially recognized by the government of Japan as surviving both explosions.

January 4 is the fourth day of the year in the Gregorian calendar; 361 days remain until the end of the year.