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First Point of Aries

American  

noun

  1. the vernal equinox.


Example Sentences

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You remember that, roughly speaking, the Sun's Right Ascension was the distance in time the sun was from the First Point of Aries.

From Lectures in Navigation by Ernest Gallaudet Draper

That is, when Greenwich is 4h   16m   30s from the sun, how far is Greenwich from the First Point of Aries?

From Lectures in Navigation by Ernest Gallaudet Draper

Add to that the sun's R.A. or the distance in time the sun is from the First Point of Aries at Greenwich Mean Noon.

From Lectures in Navigation by Ernest Gallaudet Draper

Sidereal Time at Greenwich or the distance in time the meridian of Greenwich is from the First Point of Aries.

From Lectures in Navigation by Ernest Gallaudet Draper

This point is called the First Point of Aries.

From Lectures in Navigation by Ernest Gallaudet Draper

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