what is an autumnul equinox?
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The autumnal equinox (or fall equinox) marks the beginning of astronomical autumn. It occurs during the month of September in the Northern Hemisphere, and during March in the Southern Hemisphere. In Chinese culture it marks the middle of autumn. At the same moment that the autumnal equinox occurs in one hemisphere, it is the time of the vernal equinox in the other hemisphere.\n\nIn 2006, the autumnal equinox of the Northern Hemisphere falls on September 23 at 04:03 UTC[1][2]. In the Southern Hemisphere the equinox occurs at 18:26 UTC on 20 March.
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November is the eleventh month of the year in the Gregorian Calendar and one of four Gregorian months with the length of 30 days.\n\nNovember begins (astrologically) with the sun in the sign of Scorpio and ends in the sign of Sagittarius. Astronomically speaking, the sun begins in the constellation of Libra, passes through Scorpius from approximately the 24th through the 29th and ends in the constellation of Ophiuchus, which is the only zodiacal constellation that is not counted as an astrological sign.\n\nThe name is from the Latin novem for "nine". November was the ninth month in the Roman calendar until a monthless winter period (summer in the southern hemisphere) was divided between January and February.\n\nIn old Japanese calendar, the month is called Shimo tsuki (霜月).
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Unfortunately, just Saturn.  (See source.)  Venus, Mars, and Jupiter are too closely in line with the Sun this month.  \n\nHowever, Mercury should be visible in the pre-dawn, later this month.\n\nWe just missed the very rare transit of the sun by Mercury on Nov. 8th (I'm kicking myself ... I saw the Venus transit a few years ago through a telescope, and it was wonderful).\n\nAnd don't miss the Leonid meteor shower on Nov. 17.  Unfortunately for me, this year the Leonids peak in the middle of the day in the U.S., but I imagine our European friends would get a good view.
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" The Vernal Equinox "\n(official start of the spring season)\nMarch 20 at 1:26 pm EST\n=================\n10:26 am PST\n=================
1041232
An equinox in astronomy is the moment when the Sun passes over the equator. The event occurs twice a year, around March 20 and September 23. The word equinox derives from the Latin word for equal night. The equinoxes are the two days each year when the middle of the Sun is an equal amount of time above and below the horizon for every location on Earth.
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Spring is one of the four seasons of temperate zones, the transition from winter into summer. Astronomically, some Western countries consider spring to begin with the spring equinox (around March 20 in the Northern Hemisphere, and September 23 in the Southern Hemisphere), and ends with the summer solstice (around June 21 in the Northern Hemisphere and December 21 in the Southern Hemisphere). Such conventions are by no means universal, however. In Chinese astronomy, for example, the vernal equinox instead marks the middle of spring, which begins around the time of Lichun (around February 4). In the Irish Calendar it is counted as the whole months of February, March and April. In meteorology, it is (also by convention) instead counted as the whole months of March, April, and May in the Northern Hemisphere and September, October, and November in the Southern Hemisphere.\n\nAs in summer, the axial tilt of the Earth is toward the Sun, and daylight hours are greater than or equal to 12 hours and rapidly increasing (especially in higher latitudes). The hemisphere begins to warm significantly, causing new plant growth to spring forth, giving the season its name (see Effect of sun angle on climate). Snow (if any) begins to melt, and rivers and streams swell with runoff and spring rains. Most flowering plants bloom this time of year, in a long succession beginning even when snow is still on the ground, and continuing into early summer. In normally snowless areas, "spring" may begin as early as February during warmer years, with subtropical areas having very subtle differences, and tropical ones none at all. Subarctic areas may not see "spring" at all until May or even June, or December in the outer Antarctic.\n\nSevere weather most often occurs during the spring, when warm air begins to invade from lower latitudes while cold air is still pushing from the polar regions. Flooding is also most common in and near mountainous areas during this time of year due to snowmelt, many times accelerated by warm rains. In the United States, Tornado Alley is most active by far this time of year, especially since the Rocky Mountains prevent the surging hot and cold airmasses from spreading westward and instead force them directly at each other. Besides tornados, supercell thunderstorms can also produce dangerously large hail and very high winds, for which a severe thunderstorm warning or even tornado warning is usually issued. Often, spring storms trigger dozens of warnings, one right after the other, often simultaneously along a line hundreds of miles or kilometers long. Even more so than winter, the jet streams play an important role in severe weather in the springtime.\n\nThe hurricane season officially begins in late spring, on May 15 in the northeastern Pacific, and June 1 in the northern Atlantic. Before these dates, hurricanes are almost unheard of and even tropical storms are rare, one of the earliest ever being Tropical Storm Ana in mid-April 2003. Even in June, hurricanes are uncommon.\n\nSpringtime is seen as a time of growth, renewal, of new life (both plant and animal) being born, and of the cycle of life once again starting. It is also used more generally as the start of better times, as in Prague Spring.
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look here: http://skytonight.com/observing/skychart/3308911.html\n\nOr here for a simpler one just for the month of November:\nhttp://www.accd.edu/sac/ce/scobee/StarChart.htm\n\n\nAfter looking it seems to be below the horizon for the northern hemnisphere. It is up during the day but the Sun drowns out the light coming from the stars.\n\nHere is it's placment in the sky: http://en.wikipedia.org/wiki/Leo_%28constellation%29\nIt is just south of the Big Dipper (Ursa Major) so it may be up in the early morning.\n\n\nEDIT:\nIf you are looking for the meteor shower see here:\nhttp://www.space.com/spacewatch/061117_leonid_guide.html\n\n\nIn North America, for the Maritime Provinces of Canada, New England, eastern New York and Bermuda, the Sickle of Leo (from where the Leonids appear to emanate) will be above the east-northeast horizon just as the shower is due to reach its peak.  But because Leo will be at a much lower altitude compared to Europe, meteor rates correspondingly may be much lower as well.  However, this very special circumstance could lead to the appearance of a few long-trailed Earth-grazing meteors, due to meteoroids that skim along a path nearly parallel to Earth's surface.
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Winter Solstice has the least daylight: Dec 21. March 21 and September 21 are the vernal and autumnal equinoxes (when day = night = 12 hours). June 21 = the day with most daylight (in Northern Hemisphere).
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winter equinox\ntomorrow
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September is the ninth month of the year in the Gregorian Calendar and one of four Gregorian months with 30 days.\n\nSeptember begins (astrologically) with the sun in the sign of Virgo and ends in the sign of Libra. Astronomically speaking, the sun begins in the constellation of Leo and ends in the constellation of Virgo.\n\nThe name comes from the Latin septem, for "seven". September was the seventh month of the Roman calendar until 153 BC.
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I would say it depends on what you mean by official. But The first day of a new season is often taken as a solistice, or an equinox. In the northern Hemisphere, that would make the last day of summer roughly September 21th, since September 22st is the fall or autumnal equinox. \n\nThe equinox is that date at which the day and the night are roughly of equal length, and the sun crosses the celestial equator. \n\nThe last day of summer in the southern hemisphere is of course the day before the vernal equinox, or March 19 or so.
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I don't think a solar equinox exists. There is a Vernal Equinox and an Autumnal Equinox.\n\nAn Equinox according to Dictionary.com is:\n\ne·qui·nox    ( P )  Pronunciation Key  (kw-nks, kw-)\nn. \nEither of two points on the celestial sphere at which the ecliptic intersects the celestial equator. \nEither of the two times during a year when the sun crosses the celestial equator and when the length of day and night are approximately equal; the vernal equinox or the autumnal equinox.
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Leonids mid-November \nGeminids mid-December \nUrsids late December
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Actually, it's "equinox" that means equal night.\n\nOn the equator, the days and nights are always 12 hours long (not exactly, the width of the sun's disk plus the effects of atmospheric refraction make the days a few minutes longer than the nights). The tilt of the earth's axis affects the path the sun takes across the sky, but not the length of the day.\n\nOn the equinoxes, and at no other time, the length of the day and night is 12 hours the whole world over (except right at the poles), because the plane containing the tilt of the earth's axis is at right angles to the direction between the earth and the sun - that is, the axis is not pointing at all toward or away from the sun, and the poles are equidistant from the sun.
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The axis of the earth shifts seasonally.
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It is the spring equinox, the first day of spring.  It is when the earth in it's orbit around the sun is at a position where the daylight hours are equivalent to the darkness hours when the earth rotates.  This year it's on March 20th.
15804
You have the dates wrong, and the dates do shift a bit.  The vernal equinox is usually March 20 but sometimes March 19.  The autumnal equinox is usually September 22 but sometimes September 23.  Theay are always half a solar year apart.  The shift has to do with the fact that the solar year is approximately 365-1/4 days long.  It's the same reason we have leap year.  I hope this answer helps!