Longest Day of the Year: Summer Solstice Arrives Saturday

The Earth will reach one of its four major way stations Saturday (June 21) during its annual trip around the sun. The sun will reach its northernmost point in the sky — known as the summer solstice — Saturday. In the Northern Hemisphere, this marks the longest day of the year.  Because of Earth's tilt of 23.4 degrees to its orbit, the noon sun will appear to rise and fall in the sky over the …