"Twice a year, in May and July, the Sun passes directly overhead for locations on Earth in the tropics. On these two days, around local noon, the Sun will be exactly overhead, at a 90o angle, and an upright object such as a flagpole will have no shadow. This phenomenon only occurs in the tropics; the Sun is never directly overhead in any other part of the planet. In 1990 Bishop Museum held a contest to give a name to this phenomenon. The winner was “lāhainā noon.”"
https://www.bishopmuseum.org/lahaina-noon/
Hilo, Hawai‘i Island, 19.7 o N
May 18, 12:17 p.m.
July 24, 12:27 p.m.
Kailua, Kona, Hawai‘i Island, 19.6 o N
May 17, 12:20 p.m.
July 24, 12:31 p.m.
South Point, Hawai‘i Island, 18.9 o N
May 14, 12:19 p.m.
July 27, 12:29 p.m.
https://www.bishopmuseum.org/lahaina-noon/
Hilo, Hawai‘i Island, 19.7 o N
May 18, 12:17 p.m.
July 24, 12:27 p.m.
Kailua, Kona, Hawai‘i Island, 19.6 o N
May 17, 12:20 p.m.
July 24, 12:31 p.m.
South Point, Hawai‘i Island, 18.9 o N
May 14, 12:19 p.m.
July 27, 12:29 p.m.