Q. Which day is observed as 'Hiroshima Day' every year?
Answer:
6 August
Notes: Hiroshima Day, observed on August 6th, commemorates the atomic bombing of Hiroshima, Japan, by the US on August 6, 1945. The bomb, "Little Boy," dropped from the B-29 bomber Enola Gay, instantly killed 70,000-80,000 people. A second bomb on Nagasaki on August 9 led to Japan's surrender on August 15, 1945, ending World War II and marking the first use of nuclear weapons in warfare.