your horizon
Zenith is in a 90 degree angle and Horizon is a left and right direction
Everywhere. The zenith at a given point is the local vertical direction pointing away from the direction of the force of gravity at that location. In other words it is the point that is exactly straight up, no matter where you are on earth's surface.
straight up or pointing to the zenith or in a direction at right angles to the surface of the earth
The zenith.
Because of the rotation of the Earth, the Harvest moon -any moon- appears to rise in the east to it's zenith, then fall out of sight below the Earth's western horizon. If you are north of the Equator, the moon's zenith is southward. Conversely, if you are in the southern hemisphere, the moon's zenith is northward.
The zenith is the direction directly above the observer. The astronomical horizon is the plane that is perpendicular to that direction, i.e. horizontal. The "true horizon", however, is the cone from the observer to the point on the earth, below which you can not "see over", so it is a small amount lower in angle. In practice, the two horizons can be considered to be the same, because the height of the observer is often small in comparision to the diameter of the earth, unless the observer is standing on a tall point, such as a mountain.
The ZENITH .
During the equinoxes, when the Sun is at its highest, it will be at a distance from the zenith which is the same as your geographical latitude, but in the opposite direction. For example, if you live 50 degrees north of the equator, the Sun will be 50 degrees south of the zenith at noon.
zenith
It appears Zenith gas refers to gas obtained from the Zenith Oil and Gas company.
You are allowed to run a spell checker on your questions. To answer your question, local zenith is a direction. It is upwards and it goes from the centre (Canadian spelling) of the earth, up thru (Engineering spelling) your head and onward into the sky. It is called local because it depends on your location. If you were standing on the equator then the local zenith is perpendicular to the earth's axis. If you were to stand at either pole, then the local zenith would be parallel to the earth's axis.
Hey Zenith! Awesome! LOLZ