1. Hawaiian Flag Day: August 1 is a significant day in Hawaii's history as it marks the anniversary of Hawaiian Flag Day. The Hawaiian flag, also known as the flag of the Kingdom of Hawaii, was officially adopted on August 1, 1845, by King Kamehameha III.

2. The Overthrow of the Hawaiian Monarchy: On August 1, 1898, the Hawaiian monarchy was overthrown by a group of American businessmen and sugar planters, with the support of the United States military. This event marked the end of the Hawaiian Kingdom and the beginning of Hawaii's annexation to the United States.

3. Pearl Harbor Commission: On August 1, 1941, the Pearl Harbor Commission was established by President Franklin D. Roosevelt to investigate the Japanese attack on Pearl Harbor. The commission's report was critical of the military commanders in charge of Pearl Harbor and led to significant changes in the U.S. military's command structure.

4. Statehood Day: August 1 also commemorates Statehood Day, marking Hawaii's admission as the 50th state of the United States on August 21, 1959. Statehood Day is a public holiday in Hawaii, and ceremonies and parades are held across the state to celebrate the occasion.

5. Hawaiian Language Restoration: In recent years, August 1 has been designated as a day to celebrate Hawaiian language restoration efforts. The Hawaiian language was banned in schools and government in the late 19th century, leading to a decline in fluency amongst Hawaiians. Today, there are efforts to promote the teaching and use of the Hawaiian language, and August 1 is recognized as a day to celebrate these efforts.