1. In 1946, a devastating tsunami hit the Hawaiian Islands on April 1, causing widespread destruction and loss of life. The disaster prompted the creation of the Pacific Tsunami Warning Center in Hawaii, which still operates today.

2. On April 25, 1978, Hawaiian musician Israel Kamakawiwo'ole recorded his first album, titled "Ka'ano'i." Kamakawiwo'ole went on to become one of Hawaii's most beloved musicians, known for his powerful voice and love for his homeland.

3. In 1986, Hawaii became the first state in the United States to mandate seat belt use for all front-seat passengers. The law went into effect on April 25 of that year and has since saved countless lives on Hawaii's roads.

4. April 25, 1837 marked the birth of Queen Emma of Hawaii, who played an important role in Hawaiian history. Queen Emma was married to King Kamehameha IV and used her position to advocate for the rights of Hawaiian people, especially in the area of health care.

5. On April 25, 1898, the United States declared war on Spain, a conflict known as the Spanish-American War. Although Hawaii was not yet a state at the time, the islands played an important role in the war effort, with Hawaiian soldiers serving in the US military and Hawaii serving as a strategic base for American operations in the Pacific.