1) May 10, 1872: King Kamehameha V dies without naming an heir, causing a constitutional crisis and leading to the election of King Lunalilo as his successor.

2) May 10, 1927: Aviator Charles Lindbergh lands his plane, the Spirit of St. Louis, in Honolulu on his way to completing the first solo non-stop transatlantic flight.

3) May 10, 1946: The Honolulu Symphony Orchestra performs its first concert, conducted by Russian-American maestro Vladimir Sokoloff.

4) May 10, 1960: The first Hawaiian Volcano Observatory is established on the island of Hawaii under the United States Geological Survey, leading to groundbreaking research on the active volcanoes of the Hawaiian Islands.

5) May 10, 1972: The Hawaiian language is officially recognized as one of the state's official languages, leading to renewed efforts to preserve and promote the language and culture of Native Hawaiians.