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May 8–9, 1970 Mercury Transit

Was this Mercury Transit visible in Boston?

1970 Mercury Transit Animation

The animation shows what the 1970 Mercury Transit approximately looked like from Earth.

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Where the Transit Was Seen

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Where the 1970 Mercury Transit Was Seen

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

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

Was this transit visible in Boston?

Who Could See the Transit

Solar Eclipse Path

Transit was visible.

Transit was not visible.

Shades of darkness

Night

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

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

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

Day

When the 1970 Mercury Transit Happened Worldwide — Timeline

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 that saw the partial transit beginMay 9 at 04:17:34May 9 at 12:17:34 am
Geocentric** partial transit began (ingress, exterior contact)May 9 at 04:19:20May 9 at 12:19:20 am
First location that saw the full transit beginMay 9 at 04:20:35May 9 at 12:20:35 am
Geocentric** full transit began (ingress, interior contact)May 9 at 04:22:22May 9 at 12:22:22 am
Mercury was closest to the Sun's centerMay 9 at 08:16:10May 9 at 4:16:10 am
Geocentric** full transit ended (egress, interior contact)May 9 at 12:09:49May 9 at 8:09:49 am
Last location that saw full transit endMay 9 at 12:11:36May 9 at 8:11:36 am
Geocentric** transit ended (egress, exterior contact)May 9 at 12:12:51May 9 at 8:12:51 am
Last location that saw partial transit endMay 9 at 12:14:38May 9 at 8:14:38 am

* 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 7 hours, 53 minutes, 31 seconds.

Transits and eclipses visible in Boston

Previous Mercury Transit was on Nov 7, 1960.

Next Mercury Transit will be on Nov 10, 1973.