the axis
First of all to correct your spelling. 'Imiginary' should be 'IMAGINARY'. and 'Witch' should be 'which' There is no such word as 'imiginary' in the English language. 'Witch' is a 'female sorceress'. Please remember to correct your spelling in future. Two answer your question ; The imaginary line is the AXIS'. on the surface of the Earth it is the two poles (North and South Poles). The Earth rotates ONCE in every 24 hours.
Prime Meridian
The imaginary line 180 degrees east and west of the Prime Meridian is called the International Date Line. Crossed from west to east, the date moves back by one day.
The dividing line between light and shadow across the moon's disk is called the terminator. This is the line that separates the illuminated side of the moon from the dark side.
The Moon is actually named Luna.
The axis.
The axis.
axis of rotation
It's called the earth's axis.
the equator is the imaginary line
The imaginary line at 0 degrees latitude is called the equator.
Line of Scrimmage
fuh
the axis
the equator
axis
The international date line.