zeniths

Noun

zenith (plural zeniths)

1. The point in the sky vertically above a given position or observer; the point in the celestial sphere opposite the nadir.
   • The 12 day wee had the wind high and large ſo that in two dayes ſaile we made the Sunne our Zenith or verticall point[…]1638, Sir Thomas Herbert, Some years travels into divers parts of Asia and Afrique

   Antonyms:

   nadir, perigee

2. The highest point in the sky reached by a celestial body.
   • […] in the middle of the day, when the sun was in the zenith, the violence of the heat was too great to stir out […]1719 May 6 (Gregorian calendar), [Daniel Defoe], The Life and Strange Surprizing Adventures of Robinson Crusoe, […], London: […] W[illiam] Taylor […], →OCLC
3. (broadly) Highest point or state; peak.
   • Winning the continental championship was the zenith of my career.

   Synonyms:

   acme, apogee, culmination, pinnacle, apex