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Summary Of: Equinox

An equinox happens each year at two specific moments in time... the equinox marks the transition from 24 hours of nighttime to 24 hours of daylight... Currently the most common equinox and solstice dates are... and may experience an equinox occurring as early as... making the equinox day 12h 7m long and the night only 11h 53m... The autumnal equinox is at ecliptic longitude 180... the vernal equinox is the first point... of no significance that the fixed stars and equinox shift compared to each other due to the... The September equinox marks the first day of Mehr or Libra in the... The March equinox marks the first day of various calendars including the... making the following day the equinox day that year... celebrated every year on the spring equinox in the northern hemisphere... the first day of autumn equinox in the southern... there are a few days near the equinox when the sun goes directly behind the satellite relative to Earth... some may add the September equinox day or may explicitly not... Equinox Means Balanced Light... Table of times of Spring Equinox for a thousand years 1452...

Encyclodia Page On: Equinox

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UTC | solstices | celestial coordinate system | Equinox (celestial coordinates) | Sun | Earth | equator | March 20 | September 22 | celestial sphere | celestial equator | ecliptic | day | sunrise | sunset | radius | minutes of arc | atmospheric refraction | Illumination of the Earth by the Sun on the day of equinox, (ignoring twilight). | | The Earth in its orbit around the Sun causes the Sun to appear on the celestial sphere moving over the ecliptic (red), which is tilted on the equator (blue). | | Diagram of the Earth's seasons as seen from the north. Far right: December solstice | | Diagram of the Earth's seasons as seen from the south. Far left: June solstice | | Day arc at 0° latitude, equator | | Day arc at 20° latitude | | Day arc at 50° latitude | | Day arc at 70° latitude | | Day arc at 90° latitude, pole | | Aries | Libra | precession of the equinoxes | astrological signs | constellations | seasons | axial tilt | 20 March | 22 September | 21 June | 21 December | equator | terminator | solstices | Longyearbyen | Svalbard | Norway | Singapore | Gregorian calendar#Calendar seasonal error | 20 March | 21 June | 22 September | 21 December | 21 March | 22 June | 23 September | 22 December | UTC | Greenwich | Tonga | 24 September | 1999 | 19 March | time zone | daylight saving time | equation of time | atmospheric refraction | diurnal | twilight | culminates | zenith | celestial coordinate systems | ecliptic coordinate system | ecliptic longitude | equatorial coordinate system | right ascension | precession of the Earth's axis | equinox | upper culmination | sidereal day | hour angle | sidereal time | Western tropical astrology | Aries | precession of the equinoxes | Persian | Nowruz | Persian calendar | Iranian festivals | Mihragan | Zoroastrianism | World Citizen | Sham El Nessim | ancient Egyptian | public holidays in Egypt | Easter Monday | Jewish | Passover | full moon | Christian churches | calculate | Easter | March 21 | Eastern Orthodox Churches | Julian calendar | Gregorian calendar | March 22 | Iranian calendar | Bahá'í calendar | Persian | Iranian | Nowruz | Azerbaijan | Afghanistan | India | Turkey | Zanzibar | Albania | Central Asia | Kurds | Zoroastrian | Bahá'í Faith | Nizari Ismaili Muslims | solar terms | Chūnfēn | Chinese | Japanese | Korean | Vietnamese | Qiūfēn | Chinese | Japanese | Korean | Vietnamese | seasons | Chinese character | Japan | national holiday | Mid-Autumn Festival | lunar month | Tamil | zodiac | 14 April | Tamil Nadu | Bangladesh | West Bengal | Earth Day | March 21 | 1970 | April 22 | Arab | Mother's Day | New Year's Day | French Republican Calendar | French First Republic | French monarchy | September 21 | 1792 | harvest festival | World Storytelling Day | adjective | plural | communications satellites | geostationary | Sun outage | civil twilight | March 21 | twentieth century | UTC | March 20 | 2008 | 03-26 | The Nuttall Encyclopædia | v | d | standards | Time | Chronometry | Orders of magnitude | Units of time | Metrology | | Portal:Time | Time Portal | UTC | UT | TAI | ISO 31-1 | Second | DUT1 | Leap second | IERS | Terrestrial Time | Geocentric Coordinate Time | Barycentric Coordinate Time | Civil time | Minute | Hour | 12-hour clock | 24-hour clock | ISO 8601 | International Date Line | Solar time | Time zone | Daylight saving time | Time offset | Ephemeris time | Barycentric Dynamical Time | Greenwich Mean Time | Prime Meridian | Time in physics | Spacetime | Chronon | Cosmological decade | Planck epoch | Planck time | T-symmetry | Theory of relativity | Time dilation | Gravitational time dilation | Coordinate time | Proper time | Time domain | Continuous time | Discrete time | Absolute time and space | Horology | Clock | Astrarium | Atomic clock | Hourglass | Marine chronometer | Radio clock | Sundial | Watch | Water clock | History of timekeeping devices | Equation of time | Complication | Calendar | Day | Week | Month | Year | Decade | Century | Millennium | Astronomical | Julian | Gregorian | Islamic | Lunisolar | Solar | Lunar | Epact | Intercalation | Leap year | Tropical year | Solstice | Days of the week | Calculating the day of the week | Dominical letter | International Commission on Stratigraphy | Geologic Time | Archaeological dating | Astronomical chronology | Nuclear time scale | Precession | Sidereal time | Galactic year | Fortnight | Jiffy | Lustrum | Saeculum | Shake | Tide | Chronology | Duration | System time | Metric time | Mental chronometry | Time value of money | Timekeeper | Categories | Astrodynamics | Technical factors of astrology | Celestial mechanics | Time in astronomy | March observances | September observances |
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Equinox".