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The usual answer is at the March (vernal equinox) and September (autumnal equinox). However this is not really true. Do to effects like refraction, the sun seams to rise earlier and set later than simple geometry would dictate. Thus if you check any almanac, you will see that there are several minutes more of day than night on the equinox days. The actual day of equal day and night would be several days before the March equinox and after the September equinox. The exact day depending on your lattitude.
For more details see - http://aa.usno.navy.mil/faq/docs/equinoxes.php
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How many times a year do you have days in which the day and night are of equal duration?
Twice, at the Summer and Winter Solstaces.
How many times each year do you have days in which the day and night are of equal duration and what are the names of each of these days?
There are two days each year when the day and night are of equal duration, known as the equinoxes. The vernal (spring) equinox occurs around March 21st, marking the beginning of spring in the Northern Hemisphere, while the autumnal equinox occurs around September 22nd, marking the beginning of autumn.
How many days on earth are equal to one day on the moon?
One day on the moon is equal to approximately 29.5 Earth days. This is because it takes the moon about 29.5 days to complete one full rotation on its axis, which is the same amount of time it takes to complete one orbit around the Earth.
How many years is 2920 days equal to?
Divide the answer by 365 because it is number of days in a year. 2,920 / 365 = 8 Years.
After how many days 1-4 of the original amount of gold 198 will remain?
After 4 days, only 1/16 of the original amount of gold (198/16 = 12.375) will remain.
How many times each year do we have days in which the day and night are equal?
Two times
How many times a year do you have days in which the day and night are of equal duration?
Twice, at the Summer and Winter Solstaces.
How many days of the year have an equal amount of day and night is it 1 2 3 4?
There are two days of equal length- they are called the equinoxes. And to the person below who asked a question by writing in the ANSWER space- shadows of the sun appear to move because the Earth is rotating (turning)
How many times each year do you have days in which the day and night are in equal duration?
3 Twice. On the Autumnal equinox and on the Vernal equinox.
How many times each year do you have days in which the day and night are of equal duration and what are the names of each of these days?
There are two days each year when the day and night are of equal duration, known as the equinoxes. The vernal (spring) equinox occurs around March 21st, marking the beginning of spring in the Northern Hemisphere, while the autumnal equinox occurs around September 22nd, marking the beginning of autumn.
144 hours equal to how many days?
144 hours is equal to 6 (six) days.
How many days equal 48 hours?
Two days equal 48 hours.
How many days are in a night?
14 days (2 weeks)
How many days does one and one fourth equal?
There are 24 hours in a day/night. Therefore 1 1/4th is equal to 1 day and 6 hours or 24 + 6 = 30 hours.
How many times each year do you have days in which the day and night are of the equal duration?
The Equinox (Vernal & Autumnal) There are only two times of the year when the Earth's axis is tilted neither toward nor away from the sun, resulting in a "nearly" equal amount of daylight and darkness at all latitudes. These events are referred to as Equinoxes
How many days equal 1209600 seconds?
840 days
How many days are equal to 3040 minutes?
2.1111 days
