Sunset vs. Sunfall — Which is Correct Spelling?

Sunset, also known as sundown, is the daily disappearance of the Sun below the horizon due to Earth's rotation. As viewed from everywhere on Earth (except the North and South poles), the equinox Sun sets due west at the moment of both the Spring and Autumn equinox.

The event or time of the disappearance of the upper circumferential edge of the sun as it sets below the horizon.

The sky as the sun sets

A decline or final phase

(Law) The automatic expiration of a statutory provision on a previously established date, in the absence of reauthorization

(Law) Providing for an automatic expiration.

To expire on a previously established date, as a statutory provision.

To provide for the expiration of (a program or agency) by means of a sunset provision.

The moment each evening when the sun disappears below the western horizon.

The changes in color of the sky before and after sunset.

(figuratively) The final period of the life of a person or thing.

(attributively) A set termination date.

The region where the sun sets; the west.

To phase out.

The descent of the sun below the horizon; also, the time when the sun sets; evening. Also used figuratively.

Hence, the region where the sun sets; the west.

The time in the evening at which the sun begins to fall below the horizon

Atmospheric phenomena accompanying the daily disappearance of the sun

The daily event of the sun sinking below the horizon

Of a declining industry or technology;

Providing for termination;