He is always working at night.

What should I make for supper tonight?

During the polar night, the sun does not rise even once.

An owlet moth is an insect that is active at night.

Kaya is my best friend.

He finished his work and went home at midnight.

In Hinduism, Yama is considered the god who judges the souls of the dead.

He was working until late at night.

He is clearly a night owl, working late into the night and sleeping late into the morning.

I heard that she works in the nightlife industry.