The highest point.
The point, in any trajectory of an object in space, where it is farthest from the Earth.
The point, in an orbit about the Earth, that is farthest from the Earth: the apoapsis of an Earth orbiter.
The point, in an orbit about any planet, that is farthest from the planet: the apoapsis of any satellite.
The attainment of the highest point of altitude reached by a heavenly body; passage across the meridian; transit.
Endpoint (usually good) arrived at after some series of actions or events, or some period , usually after the series or period has ended. The sum of something.
A ceremony marking the completion of studies at an elementary school, middle school or junior high school, the term "graduation" being reserved for high school.
Attainment or arrival at the highest pitch of glory, power, etc.