1. Humpback whales start arriving in Hawaii - September 26 marks the beginning of the humpback whale season in Hawaii, as these creatures migrate to the warm waters around the Hawaiian islands to breed and give birth.

2. The 1959 Hawaii Statehood Day Celebration - On September 26, 1959, Hawaii officially became the 50th state of the United States. The celebrations to mark this event were huge and were attended by dignitaries from across the United States.

3. The Battle of Mauna Kea - In 1970, a group of native Hawaiian activists tried to block the construction of a state-funded observatory on the summit of Mauna Kea. The protest quickly turned violent, with police using tear gas and batons to disperse the protesters.

4. Hawaiian music legend Israel Kamakawiwo'ole's debut album released - On September 26, 1993, Hawaiian music icon Israel Kamakawiwo'ole released his first solo album, "Facing Future". The album went on to become one of the best-selling Hawaiian albums of all time.

5. International Day for the Total Elimination of Nuclear Weapons - September 26 is recognized by the United Nations as the International Day for the Total Elimination of Nuclear Weapons. This day serves to raise awareness about the dangers of nuclear weapons and to promote efforts to eliminate them.