It was an obtuse triangle whose steepest side pointed directly at the sun at solar noon — the moment in the day when the sun is highest overhead — on the summer solstice.
The Sun Triangle, as Spilhaus named it, gave off a Stonehenge vibe to those who knew what it was.
People would gather beneath the giant triangle — once described by The New York Times as resembling the head of a pterodactyl — and watch the shadow beneath it shrink as solar noon approached.
This year the Northern Hemisphere’s summer solstice occurred on Wednesday at 10:58 a.m. Eastern Daylight Time.
Solar noon in Manhattan came about two hours later, at 12:57 p.m. (Solar noon jumps ahead an hour on the clock during daylight saving time.
Persons:
Athelstan Spilhaus
Organizations:
Sun, The New York Times
Locations:
Midtown Manhattan, Americas, Manhattan