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NadirThe point directly beneath an observer (opposite to
the zenith) which is always perpendicular to the celestial horizon. | |
NocturnalSee ‘diurnal/nocturnal’. | |
Nocturnal hemisphereThe hemisphere beneath the horizon, comprising the 1st,
2nd, 3rd, 4th, 5th and 6th houses. | |
Nocturnal sectSee ‘sect’. | |