पृथ्वी के वास्तविक भौगोलिक आकार को सबसे अच्छी तरह किस रूप में वर्णित किया गया है?

Just as directions like left and right are relative, there is no absolute 'up' or 'down' on the Earth. The Earth is spherical, and relative to the position of people in India, the people of which country are standing upside down?

Arrange the following Earth’s orbital-related events in chronological order starting from the beginning of a calendar year: i) Earth at perihelion ii) Summer solstice in Northern Hemisphere iii) Earth at aphelion iv) Winter solstice in Northern Hemisphere