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If you mean during World War II, it didn't. There has been some confusion, but really, the flag with the stripes around the sun, was the flag of the Navy. They still had the other flag with just a plain background.
So in answer to your question, the flag didn't change, it was merely a different flag you're thinking of.
What else can I help you with?
Which country has white flag with red circle in it?
The national flag of Japan is a white flag with a large red circle(representing the sun) in the center.
What is Japan's country flag?
The national flag of Japan is a white rectangular flag with a large red disk (representing the sun) in the center.
What does the white mean in Japan's flag?
The white background of the Japan flag is representative of honesty and purity.
How Japan got its flag?
the tailor sticted the flag
What is cool about Japan?
Japan means land of the rising sun and that the Japanese flag (the red circle in the middle of the flag) is the sun.
What is the name of the flag of japan?
The official name of the Japan flag is Nisshoki. It is a white rectangle flag with a large red circle right in the middle of it.
What country flag is white and red?
The flag with white and red stripes is the flag of Poland.
Does Japan have any other flag?
No.
Flag of Japan explain?
The national flag of Japan, commonly called the Hinomaru, consists of a white sheet with a red disk in the center.
How is Bangladesh's flag similar to Japan's flag?
Japan has a red circle on a white background. Bangladesh has a red circle on a green background.
What symbol is on the japan flag?
A big red dot in the middle of a white flag.
What is a symbol of Japan?
There are many symbols for Japan, such as their flag, the Nisshōki (sun-disc flag); the Kyokujitsu-ki (rising sun flag); the Go-Shichi no Kiri (government seal); the Cryptomeria; or the Chrysanthemum.
