Japan spans roughly 24°N to 46°N latitude. Many countries lie fully or partially within this band, creating a diverse "latitude club" across the Northern Hemisphere.
This ~24°-46°N band encompasses temperate to subtropical zones. Shared latitude doesn't mean shared climate—ocean currents (Gulf Stream/Kuroshio), continentality, elevation, and monsoon systems create vastly different weather. Madrid (40°N) is Mediterranean; Beijing (40°N) is continental; Tokyo (35°N) is humid subtropical. But all experience distinct seasons and similar day-length patterns.
Fun Fact: The US cities of San Diego (32°N), Dallas (33°N), and Philadelphia (40°N) also sit on Japan's latitude!