The imperial flag of Japan elements a fundamental crimson circle on a white background, is named the Nisshoki or Hinomaru

https://blogfreely.net/dentuniphb/flagpoles-and-free-speech-why-the-stars-and-stripes-still-matter

The imperial flag of Japan facets a uncomplicated pink circle on a white historical past, often called the Nisshoki or Hinomaru, representing the sun and embodying Japan's cultural identity and old importance in Asia.