Setting out in an aircraft at noon from Quito, about 1km North from the Equator, at a speed of 1669.8km/hr to the West and following the line of the Equator.

After 24 hours, the 40,075km journey will be complete representing one circumference of the Earth.It will also cover all those longitude meridians which are made up of time and distance differences corresponding to 4 minutes clock time for 1 degree of longitude.

This is how easy logic and reasoning is - a crucial component in astronomy.