Although the flags of most of the world’s countries have a rectangular form ... With a white cross and a red background, tradition has it that it could be based on the insignia of the Canton ...

Flags represent a country's identity and history ... Japan’s flag features a simple red circle on a white background, symbolising the rising sun. Japan’s flag doesn’t have a star.

The flags were ordered to remain at half-staff for 30 days or until Jan. 29. While the country’s flag code dictates flags remain lowered following a president’s death, the code is not mandatory.