1. King Kalakaua's coronation anniversary: On September 28, 1874, King David Kalakaua was crowned as the king of the Hawaiian Kingdom in a lavish ceremony in Honolulu. This event marked the first time a Hawaiian monarch had been crowned in over 30 years.

2. First Hawaiian bank established: On September 28, 1858, the first Hawaiian bank, Bishop & Co., was established in Honolulu. It was named after its founder, Reverend Charles Reed Bishop, who was also the husband of Princess Bernice Pauahi Bishop, the last legal heir of the Kamehameha dynasty.

3. First inter-island cable laid: On September 28, 1902, the first inter-island telegraph cable was laid between Honolulu and Maui. This allowed for faster communication and more efficient business operations between the islands.

4. Hawaii Five-O premiere: On September 28, 1968, the iconic television series Hawaii Five-O premiered on CBS. The show followed the adventures of the Honolulu Police Department's elite special investigations unit, with Jack Lord playing the lead role of Steve McGarrett.

5. Hawaii officially becomes a state: On September 28, 1959, Hawaii was officially recognized as the 50th state of the United States. This followed years of political turmoil and efforts to achieve statehood, including a referendum in which 94% of Hawaiian voters supported joining the union.