The layer at night is called dusk, and the layer at day is called cloud.

That's called sunset glow, also called flaming cloud.

The flaming cloud refers to the red cloud at sunrise or sunset, which is one of the phenomena of atmospheric change.

Flame clouds belong to low clouds. When the sun just comes out, or when the sun is about to set in the evening, the clouds on the horizon are often red, like fire, so they are called fire clouds.

Related proverbs

1, "Fire clouds burn late and it will be fine tomorrow".

In the evening, the red sunset glow appeared in the decrease of cloud cover, which was caused by the scattering of sunset glow, indicating that the local weather would be better in the future, so there is a saying that "the sunset glow travels on Wan Li Road".

2. "A cloud burns in the morning and it rains in the afternoon".

There are burning clouds in the morning. If the sun rises, the ground is heated, thermal convection develops, forming convective clouds, which develop into cumulonimbus clouds in the afternoon and evening, and thunderstorms may also occur.