Newly found comet now visible to naked eye in 'once-in-a-lifetime' event

[royable]

4. It doesn't matter.

If people around the world look to the west at sunset, whatever their time zone, they'd see the sun setting, sitting out there in the direction of space that the sun is in relative to Earth on that day.

Similarly, just before dawn, on a given day, people around the world could look to the northeast and they're looking out in the direction of space where there just might happen to be a comet.

Caveat: This may not be true at extremely high latitudes, beyond the Arctic or Antarctic Circles, at particular times of the year and what patch of sky you'd like to see, since the Earth itself might be in the way of that direction.