in which part of the world the sun becomes green while setting?

Answer 1

The Sun never becomes green while setting. However, the phenomenon known as "green flash" occurs just after sunset or just before sunrise on rare occasions. It is most common when the observer has an unobstructed horizon (such as the Sun rising or setting over the ocean), and is caused when layers of air at different temperatures produce a mirage effect. The Sun does not turn green, but a green blob of light is very briefly visible at the horizon.

Answer 2

Green flashes come in two common forms, succinctly described by James Prescott Joule in a letter to the Manchester Literary and Philosophical Society in 1869. First, he noted that “at the moment of the departure of the sun below the horizon, the last glimpse is coloured bluish green.” This “last glimpse” flash is associated with the inferior mirage, familiar on asphalt roads on sunny days. It is best seen from a few meters above sea level, and becomes compressed to a thin line at the horizon when seen from considerable heights.

here are a few pics for you to observe it

In one line the answer is that the green flashes can be seen anywhere on a clear horizon.

cheers,

ritu

Answer 3

the event your talking about is simply called a 'green flash' and can be seen almost anywhere on earth. you must be fairly high in elevation and be able to see a low horizon when the sun sets. this flash is caused by the distortion of the suns rays by Earths atmosphere, so the more atmosphere you are looking through the better chance you have of seeing it.
good luck and be prepared, because it is there and gone in a few moments.

Answer 4

Never heard of that but during sunset and sunrise, the part of the sky between the yellow and blue is slightly greenish. you have to look carefully to notice.

Answer 5

Greenland ...