Here are five interesting facts about April 5 in Hawaii history:

1. On April 5, 1811, King Kamehameha I issued a decree establishing the Ahupua'a land division system. This system helped to organize land use and management by dividing the land into sections from the mountains to the sea.

2. In 1973, April 5 marked the opening of the Hawaii State Capitol building. Designed by architect John Carl Warnecke, the building's unique features include a central open-air courtyard and a reflecting pool.

3. April 5, 1890, saw the birth of local physician Dr. Charles Robert Hemenway. He served as the founding president of the University of Hawaii and was instrumental in expanding healthcare and education in the state.

4. In 1946, on April 5, Hilo's Mauna Loa volcano began a 23-day eruption that sent lava flows into the Wailuku River and Hilo Bay. The eruption caused widespread damage and raised awareness of the threat of volcanic activity in the area.

5. On April 5, 1987, Honolulu's iconic Aloha Tower was officially reopened as part of a renovation project. The tower had been closed for over a decade and had fallen into disrepair, but the restoration helped to revitalize the surrounding waterfront area.