Is there a place on earth where they have equinox`s all year round.?

Answer 1

Er...the definition of "equinox" actually makes this impossible...

Answer 2

No.

The earth is tilted on its axis at 23 degrees. The axis points in the same direction all the time - toward the pole star in fact.

On one side of the sun, the southern hemisphere is titled closer. Then 6 months later, on the other side of the orrbit around the sun, the northern hemisphere is titled closer.

Only at the midpoints between these two extremes is there an equinox. At those times, everywhere experiences equal length of day and night.

So there's nowhere that has equinox all year round. Rather, twice a year, everywhere has equinox.

Answer 3

Well the only possible way that is could actualy occur would be if all the days and nights all year round were the same length, and therefore al would be equinoxs, as all are both the longest and the shortest simultaniously.

I do not belive this could occur anywhere on the Earth, as it has a slight 'wobble' in its axis.

Answer 4

The mathematical definition of 'length of day' is through the polar angle of the sun at sunrise (and sunset).

The formula is Cos(P) = - tan(LAT)*tan(DEC)

The sun's polar angle P changes by 360 degrees per day (or 2*pi radians or 24 hours -- in astronomy, angles are sometime calculated in 'hours' where 1 h = 15 degrees).

Therefore, the length of day is equal to 2*P (The sun's poalr angle changes from -P to 0 from sunrise to noon, and from 0 to +P from noon to sunset).

Take the observer's latitude (LAT) and the Sun's declination around noon (DEC). Then do the math:

Cos(P) = - tan(LAT)*tan(DEC)

For a day that is exactly 12 hours (2*P = 180 degrees), then cos(90) = 0

That is only possible if at least one of LAT and DEC is exactly zero.

DEC = 0 occurs twice a year (on each day called 'equinox').
LAT=0 is anywhere on the equator.

Of course, if you are on the equator and on the day of the equinox, then both are zero and 0*0=0.

The equation is for the theoretical time of sunrise (or sunset) of the centre of the sun on the perfect horizon, with no atmospheric refraction. In reality, the duration of daylight is almost always a bit longer than what is calculated with this equation.

Answer 5

Depends on how you define "equinox." The literal meaning of the word is "equal night," and it was meant to indicate a time when the number of daylight hours was exactly equal to the number of nighttime hours.

So if, by your question, you mean, "Is there a place on earth where daytime and nighttime are always of equal length, all year round?", the answer is "yes." This happens at any location on the equator.

However, nowadays "equinox" is understood to mean the particular points in the earth's orbit where the sun is directly over the equator. When this happens, daytime and nighttime are of equal lengths at all latitudes, not just at the equator. This happens only twice a year.

Answer 6

The equinox is a instant of time, it happens at the same instant all around the Earth.

March 21, 2007, 00:07 UT, and
Sept 23, 2007, 09:51 UT

UT = Standard time at London; EST = UT - 5 hours.

Answer 7

How does day length vs. date at 0 degrees latitude vary?