Zenith

The zenith (UK: /ˈzɛnɪθ/, US: /ˈziːnɪθ/) is an imaginary point directly "above" a particular location, on the celestial sphere. "Above" means in the vertical direction (plumb line) opposite to the gravity direction at that location (nadir). The zenith is the "highest" point on the celestial sphere.

For other uses, see Zenith (disambiguation). "Zenith angle" redirects here. For the novel, see The Zenith Angle.
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