The lines are relatively useless. But the angle of longitude itself is of interest, because time according to the sun advances through longitude at a steady rate, moving through 1 degree every 4 minutes, or 15 degrees every hour.
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There's another way of saying this.
The earth revolves once every 24 hours. There are 360o in a circle. Suppose you were in able to remain motionless above the equator, so that the earth could rotate beneath you, and that you were holding a watch. Every hour the earth would rotate through 360o/24=15o.
This means that if you started watching the time just as you pass over the zero longitude you would see the 15o longitude at one hour, the 30o longitude at two hours, the 45o at three hours, and so on, until the saw the 360o longitude at the end of a full 24 hours-back where you started.
The prime meridian is a line of longitude
It's the lines of longitude which are used to define time zones, not lattitude.
All lines of longitude are measured from the Prime, or Greenwich, meridian.
Longitude, longitudinal As opposed to latitude (horizontal lines circling the earth.
lines of longitude are lines drawn north and south and measure east and west a famous line of longitude is the Prime meridian
Longitude ! :D
yes it does hve something to do with time
There is no such longitude. The maximum degrees for lines of longitude is 180 east and west only.
yes
The prime meridian is a line of longitude
meridians or lines of longitude
It's the lines of longitude which are used to define time zones, not lattitude.
As all the lines of longitude meet there, it is impossible to calculate time there.
All lines of longitude are measured from the Prime, or Greenwich, meridian.
"Lines" of constant longitude are "meridians".
Lines of longitude, or meridians.
There are 24 time zones. The Earth is 360 degrees around the circumference. So, for every 15 degrees of longitude there is one time zone.