summer solstice
Polaris can be used to determine latitude in the northern hemisphere as it is directly overhead from the north geographic pole. The sun can be used for the same purpose if proper tables are available.
summer solstice
summer solstice
summer solstice
summer solstice
There is no time between these. On the day before the autumnal equinox, the sun is directly overhead in the northern hemisphere (at a latitude just north of the equator). The following day, it is directly overhead in the southern hemisphere (just south of the equator). The sun goes from being overhead in the northern hemisphere to the southern hemisphere instantaneously, the change happening at the autumnal equinox.
The time period when the sun is directly overhead at 23.5 degrees north latitude is known as the summer solstice. This occurs around June 21 each year, marking the longest day of the year in the Northern Hemisphere. During this time, the Northern Hemisphere experiences its peak summer season.
Summer officially begins in the northern hemisphere, while at the same precise instant, Winter begins in the southern hemisphere.
That is the Tropic of Cancer.
The term for this phenomenon is the summer solstice. It is the longest day of the year and marks the beginning of summer in the Northern Hemisphere.
The vertical rays of the sun in the Northern Hemisphere occur at the Tropic of Cancer, which is located at approximately 23.5 degrees North latitude. This is the northernmost point where the sun can be directly overhead at noon, occurring during the summer solstice around June 21.
On the first day of Northern Hemisphere Summer, the sun is directly overhead at some point on the Tropic of Cancer ... the line around the Earth that's about 23.5° north of the equator. At every other latitude between the equator and the Tropic of Cancer ... all in the northern hemisphere ... the sun is directly overhead twice, on two different days between March 21 and September 21, with June 21 exactly between them. How far the two days are on either side of June 21 depends on the latitude. Right ON the equator, they're March 21 and September 21.