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Summer Solstice

June 21

The June solstice marks the sun’s northernmost point in our sky for this year.

For us in the Northern Hemisphere, the June solstice will mark the shortest nights and longest days of the year. For the Southern Hemisphere, it will mark the longest nights and shortest days. After this solstice, the sun will be moving south again.

What is a solstice?

Ancient cultures 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.

In fact, they built monuments such as Stonehenge in England and at Machu Picchu in Peru 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 by its orbital motion around the sun.

 

via: earthsky.org

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Date:
June 21
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