- equinox day
- равноденствие
English-Russian glossary on space technology. 2015.
equinox day
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Equinox — This article is about the astronomical event when the sun is at zenith over the Equator. For other uses, see Equinox (disambiguation). For the same event happening on other planets and setting up a celestial coordinate system, see Equinox… … Wikipedia
Day length — as a function of latitude and the day of the year Day length, or length of day, or length of daytime, refers to the time each day from the moment the upper limb of the sun s disk appears above the horizon during sunrise to the moment when the… … Wikipedia
Equinox (Amiga demogroup) — Equinox is an Amiga demo group with an active period between the years 1987 1996.The name Equinox was not used from the beginning. In the early days we were called The Powerlords, or sometimes The Powerlords Corporation, which consisted of… … Wikipedia
equinox — [ē′kwi näks΄, ek′wə näks] n. [ME < OFr equinoxe < ML aequinoxium < L aequinoctium < aequus (see EQUAL) + nox, NIGHT] 1. the time when the sun in its apparent annual movement along the ecliptic crosses the celestial equator, making… … English World dictionary
equinox — late 14c., from O.Fr. equinoce (12c.) or directly from M.L. equinoxium equality of night (and day), from L. aequinoctium the equinoxes, from aequus equal (see EQUAL (Cf. equal)) + nox (gen. noctis) night (see NIGHT (Cf. ni … Etymology dictionary
equinox — ► NOUN ▪ the time or date (twice each year, about 22 September and 20 March) at which the sun crosses the celestial equator and when day and night are of equal length. ORIGIN Latin aequinoctium, from aequus equal + nox night … English terms dictionary
Equinox (celestial coordinates) — In astronomy, equinox is a moment in time at which the vernal point, celestial equator, and other such elements are taken to be used in the definition of a celestial coordinate system. The position at other equinoxes can be computed by taking… … Wikipedia
equinox — /ee kweuh noks , ek weuh /, n. 1. the time when the sun crosses the plane of the earth s equator, making night and day of approximately equal length all over the earth and occurring about March 21 (vernal equinox or spring equinox) and September… … Universalium
Day — For other uses, see Day (disambiguation). Water, Rabbit, and Deer: three of the 20 day symbols in the Aztec calendar, from the Aztec calendar stone. A day is a unit of time, commonly defined as an interval equal to 24 hours … Wikipedia
equinox — /ˈikwənɒks / (say eekwuhnoks), /ˈɛ / (say e ) noun 1. the time when the sun crosses the plane of the earth s equator, making night and day all over the earth of equal length, occurring about 21 March (vernal equinox, though in the Southern… …
equinox — i. One of the two points of intersection of the ecliptic and the celestial equators, occupied by the sun when its declination is 0°. Also called an equinoctial point. That point occupied on or about March 21, when the sun’s declination changes… … Aviation dictionary
