0
The Autumnal and Vernal Equinoxes, occurring around March 21st and September 23rd, are the two days of a given year that day and night are equal in duration. This happens because contrary to popular belief, the sun does not rise and set directly overhead, or perpendicular to the horizon for most of the year. The path that the sun travels across the sky is not perfectly centered, except of course during the equinoxes. Because the sun is directly overhead at 12 o'clock noon during the equinox, if you were to travel to the equator, you would not cast a shadow.
Wiki User
∙ 8y ago
Wiki User
∙ 8y agoThe length of night is always equal to the length of night, regardless of the location
on Earth or the time of the year. In addition, the length of day is also equal to the
length of night, on two occasions in the year. If atmospheric effects are ignored,
the occasions are nominally the days of the Spring and Fall equinoxes, roughly
March 21 and September 21. If atmospheric effects are included, then the actual
dates are a few days before the March equinox and a few days after the September
one (in the northern hemisphere).
Wiki User
∙ 8y agoApproximately at the equinox. Note that this is not the exact definition of the equinox, and day and night are not exactly the same length at the equinox.
Add your answer:
Earn +20 pts
Where on Earth are day and night of equal length throughout the year?
Day and night are of equal length throughout the year at the equator.
What is the length of the year for callisto?
The time taken by Callisto to orbit the Sun is essentially the same as the length of Jupiter's year: 11.86 earth years.
Is the length of a year on earth the same as the length of a year on Saturn?
No, Because a year on Saturn is 10,832 days while earth's is 365.25 days.
Can the length daylight tell weather?
no the length of day depends on the time of year.
What are the similarities and differences between equinox and solstice?
A solstice is the longest or shortest days of the year. (December 21 is the winter solstice or shortest day of the year, June 21st is the longest or the summer solstice) Equinox is when the day and night are equal amounts of time.
What determines the length of night on earth?
Depends on where you are (latitude) and the time of year.
What time of year is the 12 hour light cycle?
These are the equinoxes; as the name implies this is where the day and night times are around the same length. They occur in March and October.
How long is day time?
That varies with the time of year. About now its about the same as night time.
Where on Earth are day and night of equal length throughout the year?
Day and night are of equal length throughout the year at the equator.
Why are the seasons the same length?
i believe that the seasons are not exactly of the same length. because a year has 365 days. 365 is not even and is not divisible by 4. therefore it can never be of same length. if they are of the same length somehow, the seasons must have shifted to some other time of year as years go by.
What is the length of the year for callisto?
The time taken by Callisto to orbit the Sun is essentially the same as the length of Jupiter's year: 11.86 earth years.
What is true of the regions near Earths equator?
they recieve more solar energy than the poles do
In which date day night are same length in India?
March 20/21 and Sep 22/23 of each year
What is the length of night and day in the desert?
That depends upon the season of the year and the latitude. However, the hours of day and night in the desert are no different that those in other non desert areas at the same latitude and during the same season. Over a period of a year the average is 12 hours of day and 12 hours of night.
What is the length of night on the desert?
The length of day and night depend upon the season of the year and the latitude of the desert. Over a year it averages 12 hours of day and 12 hours of night.
If you were at the south pole how long would night last?
Depends on the time of year. Sometimes the Sun never goes down, sometimes the Sun never comes up, sometimes the length of day equals the length of night.
Why is the full moon not on the same day for each month of the year?
Because the months are not the same length as the time between full moons. The months are not even all the same length as each other, so there's no way they could match up with anything that always takes the same length of time.
