No. Japan is a country in Asia. It's at the other side of the globe from California.
If you're asking "Where is Japan on a map of California?" then the answer is: Japan is not on a map of California. If you're asking "Where is Japan in relationship to California" then the answer is: Japan is on the other side of the Pacific Ocean.
Hawaii is much closer to California than to Japan. It is about 1/3 of the way from the US to Japan.
California
No, California is bigger in terms of area, but not in terms of population. Japan has about 3.4 times the population of California.
The Pacific Ocean is between Japan and California.
No. Japan is on one side of the Pacific and California is on the other. The Hawaiian Islands are roughly in the middle of the Pacific, so Hawaii is closer.
No, you cross the Pacific Ocean to get from California to Japan.
Japan is about the size of California.
5 o'clock PM in California is 9 o'clock AM in Japan. Japan is typically 16 hours ahead of California due to the time difference.
The flight distance frm Tokyo, Japan to San Francisco, California is 5,148 miles.
4 people for every 1 person in California are in Japan
Small amounts of radiation from damaged nuclear plants in Japan have already reached California but they pose no health threats at all. Any radiation that reaches California from Japan is well dissipated by the time it gets there.