1. In 1794, Kamehameha I, the founder of the Kingdom of Hawaii, began his successful conquest of the island of Maui. This was a significant event in Hawaiian history as it marked Kamehameha's expansion of his growing political and military power.

2. The first Chinese immigrants arrived in Hawaii on February 15, 1852. These immigrants came to Hawaii to work on sugar plantations, and over time, they became an integral part of Hawaii's multicultural society and economy.

3. On February 15, 1893, a group of American businessmen and politicians led a coup against Queen Liliuokalani, the last monarch of Hawaii. This event led to the overthrow of the Hawaiian Kingdom and the eventual annexation of Hawaii by the United States in 1898.

4. February 15, 1942, marked the beginning of the internment of Japanese Americans in Hawaii during World War II. Following the attack on Pearl Harbor, thousands of Japanese Americans in Hawaii were forcibly removed from their homes and placed in internment camps. This event had a profound impact on the Japanese American community in Hawaii and the United States.

5. In 1971, the first Honolulu Marathon was held on February 15. This annual event attracts thousands of runners from around the world and has become one of the most popular marathons in the United States. The Honolulu Marathon is also significant in that it helped to promote Hawaii as a tourist destination and helped to boost the local economy.