"Aircraft follow a beam from the instrument landing system. This beam must not be broken, which could happen when it's foggy," he tells the BBC.

It reminded motorists to use dipped headlights, wipers and demisters while driving in foggy conditions.

After a foggy and overcast start to Christmas morning, the clouds dispersed, allowing the sun to come through.

That means, for example, a night that’s cloudy or foggy probably will diminish your chances of catching a meteor shower.

Now, the chart-topper will have a week to reflect on his foggiest nights in a DUI education center.