As an AI language model, I do not have personal opinions or beliefs, but I can provide you with the requested information about April 28 in Hawaii history.

1. In 1900, the Territory of Hawaii was officially established by the United States. This followed Hawaii’s annexation by the U.S. in 1898 after a period of political unrest caused by the downfall of the Hawaiian monarchy.

2. On April 28, 1922, the Hawaiian Civic Club was founded with the goal of preserving and promoting the Hawaiian culture and heritage. Today, the club has multiple branches throughout Hawaii as well as on the mainland and continues to work on various cultural and educational programs.

3. In 1944, the Battle of Hollandia began on April 28, which was a major World War II conflict fought between Allied forces and the Japanese army in Papua, New Guinea. This battle saw the largest air assault in the Pacific War at the time and resulted in a decisive victory for the Allies.

4. In 1970, Hawaiian musician and composer Charles E. King passed away on April 28. King is known for his musical influence on traditional Hawaiian music and wrote many popular songs including “Ke Kali Nei Au” (The Hawaiian Wedding Song).

5. In 2003, a new Hawaiian language school was established on April 28, named the Ka ʻUmeke Kaʻeo Public Charter School. The school focuses on creating a Hawaiian immersion program for students and is named after the Hawaiian historian and scholar, Samuel Kamakau, who wrote many books on Hawaiian culture and traditions.