The simple answer is that the Sun is at its highest at noon, 12 o'clock midday.
A definition of "noon" is when the Sun is highest in the sky.
There are complications because of the Earth's elliptical orbit and tilted axis. So, the exact time when the Sun reaches its highest point varies a bit during the year.
Obviously, time zones and "daylight saving" have effects too.
During the 6 months between the September and March equinoxes (winter), the Sun is below the horizon at the North Pole. Between the Spring and Fall (March to September) the Sun is always above the horizon on a circular path. The maximum angle from the horizon is about 23.45 degrees.
The Sun doesn't reach an altitude compared to the Earth.The Earth revolves around the Sun, not the other way around.
At sunrise, the center of the Sun is still about 3 degrees below the horizon.
The highest altitude or latitude which will permit trees to grow is called the TREE LINE.
Troposphere
stratosphere
The altitude of the sun is 72+ degrees, and actually closer to 73 degrees. (72 degrees 46+ minutes).
The altitude of the highest point of the rainbow that you see is (42 degrees) minus (the altitude of the sun above the horizon behind you). If the sun is sitting right on the horizon ... just risen or just about to set ... then the highest point of the rainbow is about 42 degrees above the horizon opposite the sun. If the sun is higher, then the rainbow is lower, by the same amount. If the sun is more than about 42 degrees above the horizon, then any rainbow you might otherwise see is entirely below the opposite horizon, and you don't see one.
For an observer at latitude 35 degrees, the highest the sun can ever be in his sky is roughly 31.5 degrees above the horizon.
The bar-headed goose flys at the highest altitude and reaches the highest altitude of any animal.
This is because the earth absorbs the incoming radiation and although the sun is at its highest, the surface is still being heated and is releasing that heat which ultimately creates a warmer environment a few hours after the sun is at its highest point
both september and march because they both contain equinoxes which is when the sun is at the highest altitude
Shadows change length throughout the year because the altitude of the Sun above the horizon changes. The altitude (height above the horizon) of the Sun changes as the Earth revolves around the Sun each year. This is due to Earth's axis being at an angle. In the Northern Hemisphere, the North Pole is pointing away from the Sun on the winter solstice (around Dec. 21) and for the Northern Hemisphere the Sun is at its lowest altitude and shadows will be the longest of the year. On summer solstice (June 21), the Sun is at its highest altitude and shadows are the shortest of the year. Janice VanCleave
La Rinconada, Peru has the highest altitude in the world at 5,099 meters.
There are many things that could happen as the altitude of the sun increases. As altitude increases the temperature usually does too.
Tibet
It is not, the highest altitude above Sea Level is achieved by the summit of Mt. Everest.
How high the sun is in the sky. The angle between the horizon and the sun. When the sun is directly overhead (eg, at the equator) the solar altitude is 90°. In Canberra in winter, the solar altitude is 30°.
The highest altitude or latitude which will permit trees to grow is called the TREE LINE.
the vagna 137