The international date line refers to the imaginary line that starts from the north pole and extends downward to the south pole. It is the line that separates one single calendar day from the other.
Towards the west of this international date line, it is one day ahead, and towards the east of this line, it is one day behind. This means if it is Monday in the west and one crosses this line and reaches the east side, then it is Sunday in the east.
Thus, if it is Sunday in the west, then crossing the line and moving towards the east, then it is Saturday in the eastern side.
Upwelling is a process of the winds that drives away the warm water from the surface and bring up the cold and dense water from below.
Obliquity is the nature of the axial tilt of the earth i.e 23.5 ° Due to the equator bulge and other properties of the earth.
The thermohaline circulation is the global circulation of the waster that is created by the gradient flow of the surface heat and the freshwater influxes.
Milankovitch cycles are the effect of the changes in the earth's movements in climatic patterns over a thousands of years period.
Eccentricity is the orbital rotation of the earth around the sun on its axis and has more of a circular elliptical path.
The precession is the change in the orientation of the axial tilt of the planet in reference to the rotating body.
