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The subsolar point on a planet or a moon is the point at which its Sun is perceived to be directly overhead (at the zenith); [1] that is, where the Sun's rays strike the planet exactly perpendicular to its surface. The subsolar point occurs at the location on a planet or a moon where the Sun culminates at the location's zenith. This occurs at ...
Lāhainā Noon, also known as a zero shadow day, is a semi-annual tropical solar phenomenon when the Sun culminates at the zenith at solar noon, passing directly overhead. [1] As a result, the sun's rays will fall exactly vertical relative to an object on the ground and cast no observable shadow. [2]
The zenith (UK: / ˈ z ɛ n ɪ θ /, US: / ˈ z iː n ɪ θ /) [1] [2] is the imaginary point on the celestial sphere directly "above" a particular location. "Above" means in the vertical direction opposite to the gravity direction at that location . The zenith is the "highest" point on the celestial sphere.
The Tropic of Cancer, also known as the Northern Tropic, is the Earth's northernmost circle of latitude where the Sun can be seen directly overhead. This occurs on the June solstice, when the Northern Hemisphere is tilted toward the Sun to its maximum extent. [1] It also reaches 90 degrees below the horizon at solar midnight on the December ...
The following phenomena would occur if Earth were a perfect sphere, in a circular orbit around the Sun, and if its axis were tilted 90°, so that the axis itself is on the orbital plane (similar to Uranus). At one date in the year, the Sun would be directly overhead at the North Pole, so its declination would be +90
At the equator the sun will be about 23.5 degrees south of directly overhead. Because the full moon is opposite the sun, the moon would appear about 23.5 degrees north of directly overhead at the ...
It is thus the southernmost latitude where the Sun can be seen directly overhead. It also reaches 90 degrees below the horizon at solar midnight on the June Solstice. Its northern equivalent is the Tropic of Cancer. The Tropic of Capricorn is one of the five major circles of latitude marked on maps of Earth.
As the sun crosses almost directly above the Kaaba, any shadow cast by vertical objects on earth will point directly away from the Kaaba, [10] which casts nearly no shadow. [12] This phenomenon allows the direction of the qibla to be determined without needing to perform calculations or to use sophisticated instruments.