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The year has two equinoxes, which are the days on which the night and day are of equal length. They happen when the apparent position of the Sun (on the ecliptic) crosses the Earth's equator.
The equinoxes are usually March 21 and September 22, and on those days the Sun has a declination of zero and is overhead at the equator.
Ferne Streich
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When does the Northern and Southern hemispheres experience the time of day and night?
This happens at the spring and autumn equinoxes. Equinoxes occur twice a year, when the tilt of the Earth's axis is oriented neither from or to the Sun, causing the Sun to be located over the equator. They occur on the 20th or 21st of March (spring) and 22nd or 23rd September (autumn).
Will the greatest difference in seasons occur on a planet that has a circular orbit?
The greatest difference in seasons will occur on a planet that has a circular orbit. This is because winds are created this way.
Which of these occurs between the dates of the solstice?
Equinoxes
Does the great pyramid of Egypt have 8 sides on the night of the equinox?
The Great pyramid always had 8 sides. It's just that they are visible when the equinoxes occur..
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.
The equinoxes and solstices mark the midpoints of the three seasons?
No, the solstices and equinoxes mark the beginnings of the four seasons.
What seasons have equinoxes?
summer and winter
How are the solstices and equinoxes related to the seasons?
" seasons are the manifestation of solsticesand equinoxesand are markers of the seasons
When do the the equinoxes occur?
On Earth, the equinoxes occur around March 21 and September 21, but these dates can vary a day or so either way depending on the cycle of leap years. The US Naval Observatory's "Earth's Seasons" web page can show you the precise time of the equinox each year.
Does the leap day affect when equinoxes and solstices occur?
Yes. If we did not insert the leap day during leap year, the calendar date of the equinoxes and solstices would change and eventually come at very different times in the calendar year. The whole purpose of Leap Year/Leap Day is to keep our calendar aligned with the equinoxes, solstices, and seasons in general.
What are the difference between the equinoxes and the solstices?
The equinoxes and solstices are the first days of seasons. On the equinoxes, night and day is the same length. On the solstices, the day is either the longest or the shortest day of the year, depending on which solstice it is and which hemisphere you are in,
When do fall and spring occur?
They begin at the vernal and autumnal equinoxes
Can you predict seasons?
The seasons are already figured out . . . the seasons change on the equinoxes (days and nights of equal length) and on the soltices (days and nights are the most different in length)
When the northern hemisphere is tillted away from the sun what happens?
the equinoxes occur
What causes the seasons to occur what causes the seasons to occur?
it is the tilt of the earth in the suns direction
In which months do the two equinoxes occure?
They occur around 20 March and 23 September.
How are season and solstice are related?
Solstices and Equinoxes are points in the orbit of the Earth around the sun, hence directly related to seasons
