When was the Battle of Los Angeles?

The Battle of Los Angeles took place during the night of February 24/25, 1942 in Los Angeles, California. The battle involved heavy firing of anti-aircraft shells by the US forces aimed at several mysterious flying objects reportedly sighted in the sky over Los Angeles. These objects were thought to be Japanese military aircraft. However, even till today, their identity has not convincingly established. Even though six civilians lost their lives in the bombardment, there was no evidence that the firing destroyed any flying object. The firing was preceded by a blackout and sounding of air raid sirens. Now, many believe that the battle was the result of a false alarm, triggered by weather balloons, or Japanese blimps. Some even think the source of the alarm could be a flying object of extraterrestrial origin