The autumn equinox marks the start of autumn as the night becomes longer than the day.During the equinox, day and night will be around the same length.The name comes from the Latin word equi (meaning 'equal') and nox (meaning 'night').You can find our Community Guidelines in full

In the Southern Hemisphere, it is the autumnal (fall) equinox, which marks the beginning of fall. These are external links and will open in a new windowWednesday marks the spring equinox, the midway point between mid-winter and mid-summer. This year, the Spring Equinox will take place on Friday March 20. The Met Office explained: “Spring in the meteorological calendar is the season beginning in March and ending in May. The northern hemisphere spring equinox - the mid-point between mid-winter and mid-summer - occurs on 19, 20 or 21 March and is also known as the vernal equinox. The meteorological spring fell on March 1.The Met Office says that astronomical seasons "refer to the position of Earth's orbit in relation to the sun," whereas meteorological seasons are "based on the annual temperature cycle" to coincide with the calendar.This year, the Spring Equinox takes place on Wednesday, March 20 at 9.58pm UK time - just four hours The Spring Equinox always falls on one of three days towards the end of March.An equinox is a phenomenon which only happens twice a year - once during the Spring Equinox and once during the Autumn Equinox.In the Northern Hemisphere the Spring Equinox happens around March 20, marking the end of winter and the beginning of spring.An equinox happens between the summer and winter solstices, marking the point when the sun positions itself exactly above the equator before crossing through it.According to the Met Office, the spring equinox marks the beginning of astronomical spring and from this day forward the day is longer than the night. It's the first day of spring and a great time to really appreciate the nature around us.

These are external links and will open in a new window This is because the Sun appears as a disk in the sky, and the top half rises above the horizon before the centre. Meteorological seasons are typically categorised by shifts in temperature. Are you sure you want to mark this comment as inappropriate?

The 2019 Vernal Equinox is the same thing as the Spring Equinox and is on March 20. Vernal equinox and autumnal equinox: these classical names are direct derivatives of Latin (ver = spring, and autumnus = autumn). This can also result in continuous daylight in far northern countries such as Iceland and Norway.Find out more about the present-day information behind the 'Human dynamics of climate change' posterThe Quasi-Biennial Oscillation (QBO) is a regular variation of the winds that blow high above the equator.How you define the first day of winter depends on whether you are referring to the astronomical or meteoro…Everything you need to know about the forecast, and making the most of the weather.The latest breakthroughs, research and news from the Met Office.Support your business with world-leading science and technology.


Plant seeds. Summer does not officially start until the solstice on June 21. Ourexplains more about how we use your data, and your rights. The season of rebirth, fresh life and pastel colours has arrived . Supermoon will light up UK skies tonight . What is an equinox? Mar 20, 2020 Various. During the summer solstice, the Northern Hemisphere of Earth is tilted towards the Sun, resulting in increased sunlight and warmer temperatures. {{#replies}} You can unsubscribe at any time. The Sun, therefore, appears to rise before its centre at the horizon, giving more daylight than you might expect (12 hours 10 minutes on the equinox).These occur twice a year and are referred to as the 'summer solstice' and 'winter solstice'.

Hence the name, equinox, which is derived from the Latin meaning equal night.

These are the historically universal and still most widely used terms for the equinoxes, but are potentially confusing because in the southern hemisphere the vernal equinox does not occur in spring and the autumnal equinox does not occur in autumn.

Not Entirely Equal Day & Night.
Traditionally spring begins at the vernal equinox — which this year fell today (March 20). There is the meteorological spring, which began on March 1, and the astronomical spring, which begins on March 20.

Similarly, the autumn equinox marks the start of autumn as the night becomes longer than the day.On the equinox, the length of day and night are only nearly equal. On the vernal equinox, the Sun crosses the equator into the Northern Hemisphere. This is what causes the seasons.The Earth's tilt is 23.5 degrees relative to the plane of its orbit and means that, although one revolution of the planet takes 24 hours, it's different depending on the time of year.During the summer time, the Northern Hemisphere is tilted towards the Sun, so we get longer days as more light falls on this part of the planet.In the winter time it's the Southern Hemisphere that gets the majority of the light.On the spring equinox, the Earth hits the turning point in its orbit where neither the North or the South poles are tilted towards the sun.As a result, the Sun spends a roughly equal amount of time above and below the horizon at every location on the Earth, so night and day are about the same length.Meteorologists use it as the official turning point in the seasons because, although it can vary from year to year, it allows for the most accurate record-keeping.When you subscribe we will use the information you provide to send you these newsletters. The longer days mean they have more daylight and warmth from the sun which raises the temperature of both the air and the soil.So with the grass going crazy at least the evenings are getting longer and when the clocks go forward at the end of March there will again be plenty of time to get out and cut the lawn after work.

If the axis of the earth was at 90° or perpendicular to the plane of its orbit, our planet would be very different. Spring Equinox (Image: Getty) “Astronomically, spring typically starts on the day of the vernal (or spring) equinox which falls around the 20 March in the Northern Hemisphere. {{#singleComment}}{{value}} Comment{{/singleComment}}{{^singleComment}}{{value}} Comments{{/singleComment}} On the equinoxes the Sun shines directly on the equator and the …


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