What happens to the length of day during the equinox?

Answer 1

Not much. At the equator, the Sun is always within 23 degrees of being overhead at local apparent noon, so the length of the day changes very little. It's always about 12 hours 10 minutes, plus or minus 10 minutes.

Use the link below to calculate the times of sunrise and sunset every day for a year; you'll see it doesn't change much at all.

Answer 2

In the winter, there are fewer hours of *daylight* in the UK than at the equator. In the summer, there are more hours of daylight in the UK than at the equator. Hours of daylight at the equator remain virtually unchanged throughout the year. The length of the day itself is the same everywhere on the surface of the Earth, that is 24 hours.

Answer 3

Short answer:

On day and one night per year.

Somewhat longer answer:

Starting a few weeks before the vernal (spring) equinox at the end of March, the dark winter sky starts to lighten in an area around the direction towards the sun. This spot moves around the horizon, one revolution per day, getting larger and lighter until the sun starts to break over the horizon a few days before the equinox. The sun will be hidden due to the rough nature of the ice pack occasionally but in essence that is the start of over 6 months of sunlight. The sun moves higher in the sky in a great spiral until the summer (northern) equinox at the end of June when the Sun is bout 23.4 degrees above the horizon. subsequently it slowly descends in a continuation of the spiral until a few days after the vernal (autumn) equinox in September when it grazes the horizon sinking slowly and just a dusk remains rotating around the pole, eventually the dusk turns to night (that takes a few weeks mind you) Then a long (4 months) of winter night envelopes the polar region. to be broken in late February or early march when the cycle repeats.

Answer 4

Along the equator, the "length of day" meaning the hours of sunlight are pretty constant all year long. As you go north or south from the equator, the length of the days get longer in your spring, reaching a maximum at the summer solstice. After the summer solstice, the day lengths decrease through the summer and fall until the winter solstice, when the days begin to get longer again.

Answer 5

At the equator, the sun will rise straight up and set straight down. As you get closer to the poles, the sun rises and sets at more of an angle. At the north or south pole, the angle is so extreme, that the sun goes accross the sky. During summer in the north pole, the sun will travel accross the sky, around in a big circle. At the summer solstice it will be at it's highest due to the earth tilting towards the sun. The north pole will have 24 hours of sunlight everyday from around march 21st until September 21st, when the sun finally sets and 6 months of night will follow. During these next six months until the following march, the earths tilt means that the north pole won't get any sunlight, regardless of the time of day. The south pole will be experiencing 6 months of sun during this time though, as the underside of the earth is constantly exposed to sunlight from September to march.

Answer 6

At the poles, each "day" is six months long. At the equator, the length of the day really doesn't change much throughout the year.

Answer 7

On the equinox, the length of the day is equal to the length of the night.

Answer 8

For the Southern Hemisphere, around June 21st is the shortest day. From then onto December 21st the days get longer.

Answer 9

The vernal and autumnal equinoxes are the two days of the year when day and night are the same length, i.e. 12 hours.

Answer 10

due to the earths tilt and its elliptical orbit about the sun