1. On September 27, 1820, the first Protestant missionary arrived in Hawaii. Hiram Bingham and his team established the first Christian mission on the island and played a crucial role in shaping Hawaii's religious and cultural landscape.

2. September 27, 1907, marked the opening of the Waikiki Natatorium, a saltwater swimming pool and public bathhouse. The facility was a popular attraction for locals and visitors until its closure in 1979. There have been ongoing efforts to restore the Natatorium, but it remains in a state of disrepair.

3. On September 27, 1941, the USS Tautog, a submarine of the United States Navy, sank a Japanese cargo vessel near Oahu. It was one of the first naval actions of World War II involving American forces in Hawaii.

4. September 27, 1969, saw the opening of the Hawaii Youth Correctional Facility, a juvenile detention center on the island of Oahu. The facility provides education, counseling, and vocational training to incarcerated youth in an effort to reduce recidivism.

5. In 1996, September 27 marked the start of the Bishop Museum's traveling exhibit, "Splendid China: The Emperor's Clay Army." The exhibit featured replicas of the famous terracotta warriors of China and offered visitors a glimpse into ancient Chinese history and culture.