1. In 1970, the Hawaiian political activist and musician, Dennis Kamakahi, released his first solo album titled "Pua'ena" on October 20th.
2. On October 20, 1816, the first Christian missionaries from New England arrived in Hawaii. Led by Reverend Hiram Bingham, they hoped to convert the natives to Christianity and western ways of living.
3. October 20th, 1976, marked the opening of the Royal Hawaiian Hotel in Waikiki, after it underwent a massive $100 million renovation.
4. In 2007, the Hawaii Department of Transportation celebrated the groundbreaking of the Daniel K. Inouye Highway on October 20th. The highway is named after Hawaii's U.S. Senator who served from 1963 until his death in 2012.
5. In 1944, the U.S. Navy took over the Waikiki War Memorial Natatorium and converted it into a training facility for naval pilots during World War II. The iconic swimming pool was never returned to its original use and has been abandoned for decades, with local efforts to restore it ongoing.