What

HOLIDAY - King Kamehameha I Day

When

6/11/2026

King Kamehameha I Day

King Kamehameha I Day is a public holiday in the state of Hawai'i. It honors Kamehameha the Great, the monarch who first established the unified Kingdom of Hawaiʻi—comprising the Hawaiian Islands of Niʻihau, Kauaʻi, Oʻahu, Molokaʻi, Lānaʻi, Kahoʻolawe, Maui, and Hawaiʻi.

King Kamehameha Day, June 11, was first proclaimed by Kamehameha V (on December 22, 1871) as a day to honor his grandfather, Kamehameha I. The first observance of the holiday happened the following year.