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it depends on the time of year but it varies from roughly 23degrees north to 23 degrees (tropic of cancer, tropic of capricorn).

2007-07-25 01:07:08 · answer #1 · answered by Anonymous · 2 0

The latitude that is equal to the declination of the Sun.

Declination: the angle north or south of the celestial horizon of a body on the celestial sphere, as measured from Earth.

Latitude is defined as the declination that is directly overhead (the declination was defined before latitude, at a time when the celestial sphere was thought to be a real, rotating sphere).

The declination of the Sun is the result of the tilt of Earth's axis measured from our orbital plane. If we had no tilt at all, the Sun would always appear to be on the celestial equator.

The declination of the Sun varies from 0 (at Spring and Fall equinoces); 23.4393 degrees North at the June solstice and 23.4393 degrees South at the December solstice.

There are tables and websites that give the declination of the Sun for each date. You can also use a "planetarium" software or, if you are really stuck, use the analemma (the strange 'figure 8' usually in the middle of the Pacific Ocean) on a globe. Look closely, you will see dates marked on it.

The latitudes corresponding to the extreme declinations of the Sun (23.4393 degrees North and South) are called "Tropics" and are usually shown as dashed lines on a globe. Inside the area bordered by the Tropics, it is possible to have the Sun directly overhead on the days (2 per year) when the Sun's declination is equal to the observer's latitude.

The time it takes the Sun's declination to cycle from one Tropic to the other and back, is called the "tropical year" and this is the one that measures the return of the seasons.

A complement of an angle is 90 degrees minus the angle. On a globe, there are dashed lines at 90 - 23.4393 = 66.5607 degrees. The north line is called the arctic circle and the south line is called the antarctic circle. The polar area within these circles are the areas from which it is possible to see the "midnight sun": the sun does not set.

The higher the latitude, the longer the period during which the sun does not set. From one day at the arctic (or antarctic) circle to 6 months at the pole itself.

2007-07-25 08:18:31 · answer #2 · answered by Raymond 7 · 0 0

It depends on the day of the year.

Around Sept 21 and March 21 (the equioxes), the equator gets vertical rays.

Around June 21 (solstice), the sun is vertical above the tropic of cancer (~23.5 degrees N. longitude)

So on any given day between approx. June 21 and Sept 21, the sun will be vertically overhead at some latitude between 23.5 degrees and 0 degrees (equator).

Between Sept 21 and Dec 21 (winter solstice), the sun will "move" to be vertical between the equator and 23.5 degrees S. latitude. Around Dec 21 it will be overhead at 23.5 degrees S. latitude.

Today, the sun is approximately overhead between 16 & 17 degrees N latitude.

.

2007-07-25 08:15:04 · answer #3 · answered by tlbs101 7 · 0 0

Depends on the time of the year. On June 21, it's 23 degrees north, and on December 21, it's 23 degrees south. On intervening days, the latitude would be somewhere between those two extremes.

2007-07-25 13:50:05 · answer #4 · answered by Egghead 4 · 0 0

23 1/2 N to 23 1/2 S

2007-07-25 08:08:11 · answer #5 · answered by Anonymous · 1 0

All the latitudes between tropic of cancer and tropic of capricon will get the sun's direct rays twice (two days) in a year.

2007-07-25 08:47:13 · answer #6 · answered by Arasan 7 · 0 0

The tropics, between latitude 23.5 degrees north and 23.5 degrees south.

2007-07-25 09:19:20 · answer #7 · answered by campbelp2002 7 · 0 0

mos of the time the ecuator receives the vertical rays depending on the time of the year

2007-07-25 08:08:31 · answer #8 · answered by Anonymous · 0 1

would it be 0 deg ?the equator

2007-07-25 08:08:46 · answer #9 · answered by Anonymous · 0 1

what ,ohh,i'm not that smart sorry

2007-07-25 08:08:21 · answer #10 · answered by angelo 3 · 0 2

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