May 5 is a vibrant day celebrated in many cultures around the world. In Mexico and parts of the United States, it's known as Cinco de Mayo, commemorating the Mexican Army's victory over the French Empire at the Battle of Puebla in 1862. In Japan, it falls during Golden Week as Children's Day (formerly Boys' Day), when families fly carp-shaped koinobori flags symbolizing strength and success. The date also marks the beginning of summer in many Northern Hemisphere countries, with flowers blooming and temperatures rising, making it perfect for outdoor activities and celebrations.