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November 11–12, 2019 Mercury Transit

This Transit of Mercury will be visible—weather permitting—for at least several hours in most of the world, including the US, South America, Africa, and Europe.

Is this Mercury Transit visible in Boston?

2019 Mercury Transit Animation

The animation shows what the 2019 Mercury Transit will approximately look like from Earth.

Live Transit Animation will start at:
Live Transit Animation has ended.
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Where to See the Transit

Try our new interactive eclipse maps. Zoom in and search for accurate eclipse times and visualizations for any location.

Mercury's path in front of the Sun is almost a horizontal line. However, throughout the day, the angle from which we observe the Sun from Earth, makes it look like it passes in a curve (see animation). Exactly how it looks, varies according to your location on Earth.

Where to See the 2019 Mercury Transit

Regions seeing at least some parts of the transit: South/West Europe, South/West Asia, Africa, Much of North America, South America, Pacific, Atlantic, Indian Ocean, Antarctica.

Expand for some cities that can see at least part of the full transit

Is this transit visible in Boston?

Who Could See the Transit

Solar Eclipse Path

Transit is visible.

Transit is not visible.

Shades of darkness


Astronomical Twilight (Sun is 12 - 18 degrees below the horizon).

Nautical Twilight (Sun is 6 - 12 degrees below the horizon).

Civil Twilight (Sun is 0 - 6 degrees below the horizon).


When the 2019 Mercury Transit Happens Worldwide — Timeline

This Mercury transit lasts around five and a half hours. The last one, in May 2016 lasted about seven and a half hours. In May 2095, there will be another almost as long.

Planet transits are normally visible from all locations where the Sun is up. However, because of different viewing angles, the start and end times can vary by a few minutes. The times below are actual times (in UTC) when the transit is visible.

EventUTC TimeTime in Boston*
First location to see the partial transit beginNov 11 at 12:34:43Nov 11 at 7:34:43 am
Geocentric** partial transit begins (ingress, exterior contact)Nov 11 at 12:35:25Nov 11 at 7:35:25 am
First location to see the full transit beginNov 11 at 12:36:24Nov 11 at 7:36:24 am
Geocentric** full transit begins (ingress, interior contact)Nov 11 at 12:37:06Nov 11 at 7:37:06 am
Mercury is closest to the Sun's centerNov 11 at 15:19:46Nov 11 at 10:19:46 am
Geocentric** full transit ends (egress, interior contact)Nov 11 at 18:02:31Nov 11 at 1:02:31 pm
Last location to see full transit endNov 11 at 18:03:13Nov 11 at 1:03:13 pm
Geocentric** transit ends (egress, exterior contact)Nov 11 at 18:04:12Nov 11 at 1:04:12 pm
Last location to see partial transit endNov 11 at 18:04:54Nov 11 at 1:04:54 pm

* These local times do not refer to a specific location but indicate the beginning, peak, and end of the eclipse on a global scale, each line referring to a different location. Please note that the local times for Boston are meant as a guideline in case you want to view the eclipse via a live webcam. They do not mean that the eclipse is necessarily visible there. Times should be accurate to a few seconds.

** The geocentric times refer to a theoretical situation where the transit is viewed from the Earth's center. They are used to provide an approximately average time schedule for astronomical events. Because of varying perspectives, observers on the Earth's surface will experience the transit at slightly different times depending on their location.

Geocentric duration of this Mercury Transit is 5 hours, 28 minutes, 47 seconds.

Transits and eclipses visible in Boston

Previous Mercury Transit was on May 9, 2016.

Next Mercury Transit will be on Nov 13, 2032.