March equinox is known as the vernal equinox (spring equinox) in the Northern Hemisphere and as the autumnal equinox (autumn equinox or fall equinox)...

equator. On the day of the equinox, the Sun appears to rise "due east" and set "due west". This occurs twice each year, around 20 March and 23 September. More...

Autumnal equinox or variations, may refer to: September equinox, the autumnal equinox in the Northern Hemisphere March equinox, the autumnal equinox in the...

Spring equinox or vernal equinox or variations may refer to: March equinox, the spring equinox in the Northern Hemisphere September equinox, the spring...

meteorological beginning of spring occurs on the first day of March. The March equinox on the 20 or 21 marks the astronomical beginning of spring in the...

The September equinox (or southward equinox) is the moment when the Sun appears to cross the celestial equator, heading southward. Because of differences...

astronomical seasons. For example, it is the time from vernal equinox to the next vernal equinox, or from summer solstice to the next summer solstice. It is...

of Earth's equator passes through the center of the Sun March equinox September equinox Equinox (celestial coordinates), either of two places on the celestial...

center of either the Sun or Earth, its primary direction is towards the March equinox, and it has a right-hand convention. It may be implemented in spherical...

the March equinox, typically on March 21. Because the Earth takes approximately 365.24 days to go around the Sun, the precise time of the equinox is not...

of the equinoxes, the time of year that the Sun is in a given constellation has changed since Babylonian times, and the point of March equinox has moved...

Earth's precession was historically called the precession of the equinoxes, because the equinoxes moved westward along the ecliptic relative to the fixed stars...

periodic component to the position of the equinoxes; the positions of the celestial equator and (March) equinox with fully updated precession and nutation...

point measured eastward along the celestial equator from the Sun at the March equinox to the (hour circle of the) point in question above the Earth. When...

of Aries, is the location of the March equinox (the vernal equinox in the northern hemisphere, and the autumnal equinox in the southern), used as a reference...

sphere (forming the celestial equator), a primary direction towards the March equinox, and a right-handed convention. The origin at the centre of Earth means...

March equinox. Thus the time from the March equinox to the September equinox is 7.56 days longer than from the September equinox to the March equinox...

Church became concerned about the widening divergence between the March Equinox and 21 March, as explained at Gregorian calendar, below. Prior to Caesar's...

list of Equinox episodes shows the full set of editions of the defunct (July 1986 - December 2006) Channel 4 science documentary series Equinox. 31 July...

meridian to the great circle that passes through the March equinox (the northern hemisphere's vernal equinox) and both celestial poles, and is usually expressed...

The Chevrolet Equinox is a crossover SUV introduced by Chevrolet in 2004 for the 2005 model year. It was intended to replace the North American Chevrolet...

had caused the calendar to drift such that the March equinox was occurring well before its nominal 21 March date. This date was important to the Christian...

seasons of the year are defined by reference to the solstices and the equinoxes. The term solstice can also be used in a broader sense, as the day when...

equinox in Japan Standard Time (the vernal equinox can occur on different dates in different time-zones), usually March 20 or 21. The date of the holiday is...

time (DST). Independent of daylight saving time, solar noon on the March equinox is about 12:00 in Western Massachusetts and 11:47 in Nantucket to the...

the March equinox to the September equinox, but lies entirely in the southern half of the celestial sphere from the September equinox to the March equinox...

moon after the vernal equinox occurs. Although the instant of the full moon must occur after the instant of the vernal equinox, it may occur on the same...

UTC) to the March equinox (typically March 20 UTC), while summer is taken as the period from the June solstice through to the September equinox (typically...

quadrant from the March equinox to the September equinox and in the southeast quadrant from the September equinox to the March equinox. Sunrises occur approximately...

being based on the Earth's orbit around the Sun. It begins on the March equinox as determined by the astronomical calculation for the Iran Standard...