On Monday November 11 2019, the smallest planet, Mercury, passes directly in front of the Sun. This event is called Mercury transit. This event will last five and a half hours and will be visible through telescopes with solar filters as a small black spot crossing the sun’s surface.
On Earth people in North America, South America, Europe, Africa and even Antarctica can view the event. But those in Alaska, the Pacific and Asia won’t be able to because the sun will be below the horizon when Mercury passes in front of the Sun.
To catch the transit check NASA’s site.