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There is a lot to smile about today - it's Friday, it's summer, and Andy Murray is still in the running at Wimbledon (for now).

This extraordinary image is just one more thing to be cheerful about.

The photograph, which has gone viral on the internet, shows clouds passing in front of the sun - creating what appears to be a smiley face.

Little is known about the image, which was first posted on Reddit six days ago and has been doing the rounds on blogs and websites ever since.

It is not clear where it was taken, or whether the sun is rising or setting.

But as it sits low on the horizon, it fills the sky with light the colour of a rosé wine - the thought of which is, of course, another reason to be smiling on this summer Friday afternoon.