Revealed Travel Guides - Hawaii Revealed on Instagram: ""Lāhainā Noon" is a natural phenomenon that occurs in tropical regions, especially in Hawaii. It is a semi-annual solar phenomenon in Hawaii where the Sun passes directly overhead at a 90-degree angle, causing vertical objects like flagpoles and telephone poles to cast no visible shadow. This occurs because Hawaii is the only U.S. state located in the tropics—the region between the Tropic of Cancer and the Tropic of Capricorn—where the Sun