1. In 1819, King Kamehameha II abolished the ancient kapu system, which forbade women, certain foods, and other restrictions from being seen or touched by anyone who was not the ruling class, priests or members of the royal family. This event led to significant social and cultural changes in Hawaii.

2. On February 22, 1862, the first group of Japanese immigrants arrived in Hawaii. Known as the gannenmono, these 148 men, women, and children were contracted to work on Hawaii's plantations for three years.

3. Hawaii's first electric streetcar began operating on February 22, 1899. The streetcar line, which ran from downtown Honolulu to Waikiki, was a significant step in Hawaii's transportation history.

4. On February 22, 1980, the Hawaii State Capitol building was dedicated. The unique design of the building, which resembles a volcano, was influenced by the state's volcanic geology and Hawaiian culture.

5. In 2010, President Barack Obama declared February 22 as National Invasive Species Awareness Day. This day aims to raise awareness of the threat that invasive species pose to Hawaii's natural resources and native biodiversity.