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EQUINOXE AUTOMNAL [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2010-08-23

English

Subject field(s)
  • Chronology
  • The Earth (Astronomy)
  • The Sun (Astronomy)
  • Meteorology
DEF

Specific moment in the year (on September 22) when the Sun is directly on the celestial equator, moving south of the celestial equator.

OBS

Marks the beginning of fall.

French

Domaine(s)
  • Chronologie
  • Terre (Astronomie)
  • Soleil (Astronomie)
  • Météorologie
DEF

Moment de l'année où le Soleil se trouve dans le plan de l'équateur terrestre et où ses rayons sont perpendiculaires aux divers points de l'équateur.

OBS

L'équinoxe d'automne a lieu le 22 ou le 23 septembre.

Key term(s)
  • équinoxe automnal

Spanish

Campo(s) temático(s)
  • Cronología
  • Tierra (Astronomía)
  • Sol (Astronomía)
  • Meteorología
DEF

Equinoccio en el que la declinación del Sol pasa de positiva a negativa.

CONT

El equinoccio de otoño tiene lugar el 22 ó 23 de septiembre, cuando el sol atraviesa el ecuador de norte a sur.

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Record 2 2004-06-03

English

Subject field(s)
  • Chronology
  • The Earth (Astronomy)
  • The Sun (Astronomy)
  • Hydrology and Hydrography
DEF

The point on the celestial sphere where the sun crosses the celestial equator from north to south.

CONT

The other intersection of the ecliptic with the celestial equator, that is, where the sun crosses the celestial equator going from the northern to the southern hemisphere, is called the "autumnal equinox".

OBS

The vernal or spring equinox is at present on the 20 March, and the autumnal on the 22 or 23 September. Just before the reformation of the calendar they were 11 days earlier.

OBS

The time when the sun is at the autumnal equinox defines the first day of autumn. This happens on about September 22 each year.

French

Domaine(s)
  • Chronologie
  • Terre (Astronomie)
  • Soleil (Astronomie)
  • Hydrologie et hydrographie
DEF

[...] point où le Soleil passe de l'hémisphère céleste Nord dans l'hémisphère céleste Sud.

CONT

[...] à l'équinoxe vernal (ou équinoxe de printemps, 21 [ou 22] mars), on voit apparaître au pôle Nord le soleil, qui disparaît au pôle Sud; à l'équinoxe d'automne ou automnal ([22 ou] 23 septembre), c'est l'inverse.

OBS

À l'équinoxe, la durée du jour est égale à celle de la nuit sur toute la surface de la terre.

Spanish

Campo(s) temático(s)
  • Cronología
  • Tierra (Astronomía)
  • Sol (Astronomía)
  • Hidrología e hidrografía
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