Early dawn. Late sunset. Long day. Short night. For us in the northern hemisphere, the June solstice marks the longest day of the year. It's your signal to celebrate the first day of summer in this hemisphere. South of the equator, winter begins.The solstice happens at the same instant for all of us, everywhere on Earth. But our clocks say different times. This solstice takes place on Wednesday, June 21, 2006 at 12:26 Universal Time. That's the time at the longitude of Greenwich, England. Tofind the time in your location, you have to "translate" to your time zone.Here's an example.
In the central United States, for those using Central Daylight Time, you'd subtract 5 hours from Universal Time. For you, the time of this equinox would be 7:26 a.m. Central Daylight Time.
What is a solstice?
The earliest humans knew
that the sun's path across the sky, the length of daylight, and the
location of the sunrise and sunset all shifted in a regular way
throughout the year.
They built monuments, such as Stonehenge, to follow the sun's yearly progress.
Today, we know that the
solstice is an astronomical event, caused by Earth's tilt on its axis,
and its motion in orbit around the sun.
Because Earth doesn'torbit
upright, but is instead tilted on its axis by 23-and-a-half degrees,
Earth's northern and southern hemispheres trade places in receiving the
sun's light and warmth most directly.
At the June solstice, Earth
is positioned in its orbit so that the North Pole is leaning
23-and-a-half degrees toward the sun. As seen from Earth, the sun is
directly overhead at noon 23-and-a-half degrees north of the equator,
at an imaginary line encircling the globe known as the Tropic of
Cancer. This is as far north as the sun ever gets.
All locations north of the
equator have day lengths greater than 12 hours at the June solstice.
Meanwhile, all locations south of the equator have day lengths less
than 12 hours
Where should I look to see signs of the solstice in nature?
Everywhere.......
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