The sun's rays hit 50% of the Earth continuously ... 24/7/365.
They can only hit perpendicular ... straight down ... on places that are within
about 23.5 degrees of the equator, north and south. That's the only region
on Earth where the sun can ever be directly over your head. That whole "belt"
around the Earth's middle is called the "Tropics".
On June 21, the sun is as far north as it can get, appearing directly overhead for
people at 23.5 degrees north of the equator, whenever it happens to be Noon
where each of them is.
Viewed from latitude 55° north, the sun's highest altitude on June 21 is31.5° down from the zenith, or 58.5° up from the horizon.
When the Earth is in position M, which typically corresponds to the summer solstice in the Northern Hemisphere (around June 21), the latitude that receives the vertical rays of the sun is 23.5° N, known as the Tropic of Cancer. Conversely, during the winter solstice (around December 21), the vertical rays hit 23.5° S, or the Tropic of Capricorn. During equinoxes, the sun's rays are directly overhead at the equator (0° latitude).
No. That configuration occurs somewhere on the Tropic of Cancer once a year for a moment, around June 21, and somewhere on the Tropic of Capricorn once a year for a moment, around December 22.
On June 21, the summer solstice in the Northern Hemisphere, the sun reaches its highest point in the sky. At the equator, the sun will be directly overhead at noon, resulting in an altitude of 90 degrees. This phenomenon occurs because the sun's rays are perpendicular to the equator on this date.
The Tropic of Cancer, located at approximately 23.5 degrees north latitude.
21 March and 21 September
It is not true, there will be no two suns, only one. But we can see the sun in two places simultaneously on 21 June 2010
The sun is directly overhead on the Tropic of Cancer at the timeof the June solstice ... roughly June 21 or 22.
June 21
June 20-21 is a very important day for our planet and its relationship with the sun. June 20-21 is one of two solstices, days when the rays of the sun directly strike one of the two tropical latitude lines. June 21 marks the beginning of summer in the northern hemisphere and simultaneously heralds the beginning of winter in the southern hemisphere. In 2012, the summer solstice occurs and summer begins in the Northern Hemisphere on June 20, at 7:09 p.m
The Tropic of Cancer ... an imaginary line of latitude in the Northern Hemisphere ... receives direct sun rays on June 21.
summer solstice, or june 21
December 21 or 22, coinciding with the Winter Solstice in the northern hemisphere.
Viewed from latitude 55° north, the sun's highest altitude on June 21 is31.5° down from the zenith, or 58.5° up from the horizon.
The tangent ray refers to either the northernmost or southernmost hemisphere where the vertical rays refers to direct sun. During the June 21 solstice, the latitude rays in the northern hemisphere would be 66.5 degrees N (Arctic Circle)
When the Earth is in position M, which typically corresponds to the summer solstice in the Northern Hemisphere (around June 21), the latitude that receives the vertical rays of the sun is 23.5° N, known as the Tropic of Cancer. Conversely, during the winter solstice (around December 21), the vertical rays hit 23.5° S, or the Tropic of Capricorn. During equinoxes, the sun's rays are directly overhead at the equator (0° latitude).
No. That configuration occurs somewhere on the Tropic of Cancer once a year for a moment, around June 21, and somewhere on the Tropic of Capricorn once a year for a moment, around December 22.