Terminator

The Bible states:

In Job 26:10 “He has inscribed a circle on the face of the waters at the boundary between light and darkness.

The line that separates day and night is called the terminator. It is also referred to as the “grey line” and the “twilight zone.” It is a fuzzy line due to our atmosphere bending sunlight. … It is commonly thought that while half of the Earth is covered in darkness, the other half is covered in sunlight.