I not only know what I was doing on December 7 1941, but also 12/7/40 and 12/7/42.
On the morning of December 7, 1941 I went to work at the Bethelem Steel Mill in South San Francisco. After work I went to the El Capitan Theater on Mission Street. When I got out of the theater I found out about the bombing of Pearl Harbor.
On December 7, 1940, I was in Kobe, Japan. I was working on a Swedish freighter and our ship was in dry dock there. We had just finished unloading a cargo of aviation gasoline.
On December 7, 1942, I was aboard an American ship carrying a load of ammunition and headed for the staging area in the Solomon Islands.