Sun shining brightly through Stonehenge's standing stones.

From Stonehenge's circle of standing stones, the sun will rise directly over an ancient avenue leading away to the northeast on the solstice. Stonehenge is located on Salisbury Plain in Wiltshire, England. (Image credit: jessicaphoto via Getty Images )

The longest day of the year is today, June 21st, which marks the start of summer.

The sun's highest and northernmost points in the sky can be seen during the June solstice. Chris Vaughan is an astronomer with SkySafari Software who oversees Space.com's Night Sky calendar.

The summer solstice took place at 5:14 a.m. When the sun reached a point over the Tropic of Cancer.

There are planets in June's night sky.

The Farmer's Almanac Sunrise and Sunset Calculator can be used to find out how many hours of daylight you'll get in the month of June.

There are two different sides to the story. The start of winter in the Southern Hemisphere occurs when the sun is at its lowest point in the sky on the June solstice.

There will be a rare "planet parade" where all five naked-eye planets will be visible in the predawn sky. Mercury, Venus, Mars, Jupiter, and Saturn are all visible from the southeastern sky. As the month matures, it will be easier to spotMercury, which is usually hidden by the sun's glare.

According to a press release from Sky&Telescope, Mercury should rise about an hour before the sun on June 24th.

The moon will travel past the planets throughout June. On June 22nd, Venus and Mercury will come in, then on June 26th and June 27th.

Would you like to take a picture of the moon as it approaches the planets? Some helpful tips can be found in our guide to photographing the moon. If you're looking for a camera, we've got an overview of the best cameras for Astrophotography. Our guides for the best telescopes and binoculars can help you get ready for the next event.

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