Look out for the Strawberry Moon tonight

When something happens rarely, we say it occurs once in a blue moon, but it turns out, there's another moon that's even rarer, and it's going to appear in the night sky right now.

Tonight you can look up at the night sky and see a Strawberry Moon. This occurs when the longest day of the year, known as the summer solstice, also happens to have a full moon.

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The Strawberry Moon got its name from Algonquin tribes in North America that saw the first full moon of the summer as a signal that it was time to gather the fruits around them and the Strawberry Moon was a cause for celebration in other countries as well.

But since strawberries didn't originally grow in Europe, people there called it the 'Full Rose Moon'.

It's also known in various places worldwide as the hot moon, honey moon and long night moon.

About 25,000 people are expected to gather at Stonehenge for this year's Strawberry Moon.

Stonehenge is thought to be somehow related to the changing of the seasons because the sun aligns with the monument only on the summer and winter solstices.

It's often called a once-in-a-lifetime event, because there can be decades between each Strawberry Moon appearance, the last one was recorded in 1967, nearly 50 years ago.

If you're keen to catch the moon tonight you'll need to be vigilant because you won't have long to take it in since the summer solstice is the longest day of the year.

The moon will rise and set at different times depending on where you live, but it will be in the sky for about nine hours.

If you can't get outside to take in the rare cosmic coincidence, the Farmer's Almanac is planning to host a live stream of the moon from an observatory in the Canary Islands.

Bob Mernan, an astrologer at Farmer's Almanac, told the Telegraph that the two events colliding was a 'truly rare event'.

He said: "The sun gets super high so this moon must be super-low."

Adding: "This forces its light through thicker air, which also tends to be humid this time of year, and the combination typically makes it amber coloured."