The eclipse, which lasts five minutes, will be visible from 20.15 Italian time east of New Zealand, and then in Polynesia and Easter Island. Two hours later, the phenomenon will be visible in the southern Andes.

.... The eclipse of the Sun, as we see, is already in itself an event that contains an incredible coincidence. The disc of the Sun and the Moon as seen from Earth, have the same size. This is due to a peculiar combination of the size of the two stars and their distances from our planet

This means that when the Moon is opposite the Sun it overlaps almost perfectly allowing you to attend an extraordinary show. Indeed, if the Moon was closer or larger, would still have produced the phenomenon of the eclipse, but was not able to cover so much sun so we would not ever admired the beautiful solar corona. In the opposite case we would never have been able to witness a total eclipse. Same is true if the distance or size of our stars were different.