1.4 Additional Information CMS is committed to maintaining the integrity and security of health care data in accordance with applicable laws and regulations. Disclosure of Medicare Beneficiary eligibility data is restricted under the provisions of the Privacy Act of 1974 and HIPAA.
horizon-the line at which the sky and Earth appear to meet. apparent horizon, sensible horizon, visible horizon, skyline. linear perspective, perspective-the appearance of things relative to one another as determined by their distance from the viewer.
Due to the tilting of the Celestial Sphere and Equator relative to the horizon when the observer is north or south of the earthâs equator, celestial bodies appear to rise and set at an angle. (Their rising and setting are always parallel to the celestial equator.) The angle is equal to the latitude of the observer.