Lāhainā Noon is a tropical solar phenomenon when the Sun culminates at the zenith at solar noon, passing directly overhead (above the subsolar point). The term Lāhainā Noon was coined by the Bishop Museum in Hawaii and is only used locally.
Because the subsolar point travels through the tropics, Hawaii is the only state in the United States to experience Lāhainā Noon. The rest of the states recognize the summer solstice as the event when the sun's rays are closest to being direct.
Hawaii and other locations between the Tropic of Cancer and Tropic of Capricorn receive the sun's direct rays as the apparent path of the sun passes overhead before the summer solstice and retreats equatorward afterwards.
For various locations within the Hawaiian Islands, at the exact times of the Lāhainā Noon which can occur anywhere from 12:16 to 12:43 p.m. Hawaii-Aleutian Standard Time, objects that stand straight up (like flagpoles, telephone poles, etc.) will not cast a shadow. The most southerly points in Hawaii experience Lāhainā Noon on earlier and later dates than the northern parts. For example, in 2001 Hilo on the Island of Hawaiʻi encountered the overhead sun around May 18 and July 24, Kahului, Maui on May 24 and July 18, Honolulu, Oahu on May 26 and July 15 and Lihue, Kauai on May 31 and July 11. Between these two dates, the sun is slightly to the north at noon.
Chosen in a contest sponsored by the Bishop Museum in the 1990s, Lahaina Noon was the selected appellation because lā hainā (the old name for Lāhainā, Hawaii) means "cruel sun" in the Hawaiian language. The ancient Hawaiian name for the event was kau ka lā i ka lolo which literally translates as "the sun rests on the brains."
In popular culture
Activities associated with the event, and stories including "Lāhainā Noon" by Eric Paul Shaffer (Leaping Dog, 2005) which won the Ka Palapala Po'okela book award for Excellence in "Aloha from beyond Hawai'i."
- Clock, sun rarely match at noon Explanation of Lahaina Noon[dead link]
- Nancy Alima Ali (May 11, 2010). "Noon sun not directly overhead everywhere". Honolulu Star-Bulletin. Retrieved November 12, 2010.
- "'Lahaina Noon' coming here soon". Honolulu Star-Bulletin. May 23, 2001. Retrieved November 12, 2010.
- Mary Kawena Pukui, Samuel Hoyt Elbert and Esther T. Mookini (2004). "lookup of Lā-hainā ". in Place Names of Hawai'i. Ulukau, the Hawaiian Electronic Library, University of Hawaii Press. Retrieved November 12, 2010.
- Mary Kawena Pukui and Samuel Hoyt Elbert (2003). "lookup of Lolo ". in Hawaiian Dictionary. Ulukau, the Hawaiian Electronic Library, University of Hawaii Press. Retrieved May 26, 2011.
- "Newswatch: Shadows disappear today at Lahaina noon". Honoluu Star-Bulletin. May 27, 2006. Retrieved August 22, 2017.
- Kaichi, Carolyn (April 29, 2007). "Earth at prime tilt to view Mercury at apex". Honolulu Advertiser. Retrieved August 22, 2017.
- Miura, Kelli (July 11, 2008). "Lahaina Noon flits over Honolulu on Tuesday". Honolulu Advertiser. Retrieved August 22, 2017.
- "Liliha Library to host 'Lāhainā Noon,' 'StarLab' astro events". Honolulu Advertiser. July 15, 2008. Retrieved August 22, 2017.
- Adams, Wanda A. (June 26, 2005). "'Lāhainā Noon' about a warm, clear feeling". Honolulu Advertiser. Retrieved August 22, 2017.
- "Ka Palapala Po'okela winners named". Honolulu Advertiser. October 29, 2006. Retrieved August 22, 2017.
- Nakaso, Dan (May 26, 2011). "Shadow lessons: Educators will show kids and adults the marvels of a Lahaina Noon event". Honolulu Star-Advertiser. Archived from the original on August 4, 2011.
- Pruitt, B. (2002). Explore Kauai. Mutual Publishing. p. 17. ISBN 1-56647-560-0.
- Williams, Jack (May 17, 2005). "Sun beams directly down on Hawaii in May, July". USA Today.