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ASTRONOMICAL TWILIGHT [1 record]

Record 1 2015-03-12

English

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

Interval of time beginning in the morning when the centre of the Sun's disc is 18° below the horizon and continuing until sunrise, and in the evening the interval of time starting with sunset and ending when the centre of the Sun's disc is 18° below the horizon.

French

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

Intervalle de temps commençant le matin lorsque le centre du disque solaire se trouve à 18° au-dessous de l'horizon et se terminant au lever du Soleil; commençant le soir au coucher du Soleil et se terminant au moment où le centre du disque solaire se trouve à 18° au-dessous de l'horizon.

Spanish

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

Intervalo de tiempo que, por la mañana, comienza cuando el centro del disco solar se halla 18° por debajo del horizonte y termina cuando sale el Sol; por la tarde, comienza cuando el Sol se pone y termina cuando el centro del disco solar está 18° por debajo del horizonte.

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