1. In 1948, October 4 was declared "Children's Day" in Hawaii. This day celebrates the importance of children in the community and promotes their well-being.

2. On October 4, 1976, a magnitude 7.0 earthquake struck Hawaii. The quake was centered beneath the ocean floor off the coast of Hawaii Island and caused damage to buildings and infrastructure throughout the state.

3. In 2006, October 4 marked the end of a weeks-long protest against the U.S. military's use of the island of Kahoolawe for bombing practice. The occupation and subsequent activism brought attention to the environmental and cultural impacts of military activity in Hawaii.

4. On October 4, 1892, the Kamehameha Schools were established by the will of Bernice Pauahi Bishop, a Hawaiian princess and philanthropist. The schools, which provide education for Native Hawaiian children, remain an important institution in Hawaii today.

5. October 4, 1967, marked the opening of the University of Hawaii's Institute for Astronomy. The institute conducts research and provides education in the field of astronomy, taking advantage of Hawaii's clear skies and favorable weather conditions for observing the stars.