Part way through it cuts to a shot of the sky, with the sun blocked out by clouds.

During the day, the Sun can be seen in the sky, unless obscured by clouds.

The moon, nearly at the full, was still up, though veiled by clouds in the west.

They both looked up at the clear blue sky unmarked by clouds.

Sometimes the water was like open sea, the hills distant or hidden by low clouds.

The moon was up but hidden by clouds and fog.

An unknown amount of time passes as seen by clouds moving overhead.

It was a dark night with only half a moon shrouded by low clouds.

City lights had disappeared across Europe, covered by clouds, or simply gone.

The room within is dark, dimmed by clouds, which are natural, and therefore rare.