nadir

apogee, pinnacle, nadir, apotheosis, peak, acme, apex, fever pitch, heyday, crescendo, heights, twilight, plateau, epoch, ascendence, halcyon, climax, epitome, crossroads, sublimity, headiest, beginnings, juncture, saturation, midpoint, stratospheric, wane, forebear, depths, marvel, firmament, diminishing returns, touchstone, ascendant, perihelion, contemporaries, bastion, dandyism, peerless, seventies, summum bonum, fountainhead, royalism, dawning, lodestar, tipping, nirvana, majesty, millenarianism, showiness, personification, fin de siecle, end, millennium, incarnate, millennial, ascent, eighties, effulgence, noonday, metonym, transcendent, eclipsing, godhead, embodiment, annals, decadence, wellspring, ascendancy, buddhahood, era, caesarism, quintessence, diabolism, uttermost, mark, greatness, inconsequence, utopian socialism, kaliyuga, ascendance, ebb, dotage, forerunners, godhood, proportions, sophoclean, undreamt, level, ubiquity, antithesis, epicenter, immortality, sixties, voraciousness, enlightenment, throes, ostentatiousness, exaltation, ascending, purposefulness, essentialness, heavens, horizon, achievement, culmination, modernity, renascence, sun, centrality, glories, luminaries, noon, capacities, luminary, ecliptic, abscissa, azimuth, equator, equinoctial, indicated, latitudinal, observed, sunset, azimuthal, thermometric, barometric, cloudless, mean, measured, photospheric, radius, variable

ha, hour angle, nadir, observer's meridian, vertical circle, zenithal

celestial sphere, empyrean, firmament, heavens, sphere, vault of heaven, welkin

celestial point