The day when the sun is over the earths equator?

Answer 1

The points where the sun reaches the greatest distance north or south of the equator are called The Tropics of Cancer and Capricorn. At one time the sun was in those constellations when it reached those points. It has shifted due to precession of the poles. It will be back in them in about 20,000 years.

Answer 2

Solstice
This is called the "solstice", and it happens on June 21 and December 21 (plus or minus one day, due to the cycle of leap years). When the Sun reaches its maximum distance north of the equator on June 21, we call it the summer solstice (and in the Southern Hemisphere the winter solstice). When the Sun reaches its maximum distance south, this is the winter solstice in the northern hemisphere (and the summer solstice in the southern hemisphere).

Just think; in Australia, Christmas is a summer holiday!

Answer 3

We call them "June 21" and "December 21".

Those are the dates on which the sun reaches the points on the map of the stars

that are the SOLSTICES.

The solstices are not the days or the dates. They're the points on the celestial sphere

where the sun is located at those moments in time.

Answer 4

The Summer Solstice (June 20 or 21) is the time when the sun reaches its farthest northern elevation. The Winter Solstice (December 20 or 21) is when the sun is as far south as it ever goes.

The dates of the Solstices vary because the Earth's orbital period isn't exactly 365 days; it is 365 days, 6 hours and 6 minutes. We have Leap Years in the calendar every four years to correct for the imbalance. This causes the dates of the Solstices to vary by a day.

Answer 5

The sun is directly over some point on the earth's equator twice each year. At those moments,
it appears to be at the two points among the stars called the "equinoxes". These moments occur
on March 21 and September 21 or 22.

Answer 6

It is the Solstice. Summer Solstice for the Northern hemisphere, winter Solstice for the Southern when the Sun reaches the Tropic of Cancer (23.5 north); vice versa when it reaches the Tropic of Capricorn (23.5 south).

Answer 7

The astronomical first day of Summer or Winter. (Which-one-is-which depends on whether

you take your point of view from the Earth's northern or southern Hemisphere.)

The points on the map of the stars where the center of the sun resides at the moments when

the sun reaches its farthest position north or south of the celestial equator are the "solstices".

Answer 8

Those are the days when the sun reaches the "solstices" ... June 21 and December 21.

These dates can vary a day or two either way depending on the cycle of leap years. See the link below for the precise timing of the equinoxes and solstices.

Answer 9

That's the day when Summer or Winter begins, depending on where on Earth you live.

Greatest distance north of the Equator:

Close to June 21.

Sun reaches the June "solstice" ... a definite point on the map of the stars.

Summer begins in the northern hemisphere, Winter begins in the southern one.

Greatest distance south of the Equator:

Close to December 21.

Sun reaches the December "solstice" ... a definite point on the map of the stars.

Summer begins in the southern hemisphere, Winter begins in the northern one.

Answer 10

That happens at the time of the solstices, nominally June 21 (north)

and December 21 (south).