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New England's Dark Day

New England's Dark Day is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand New England's Dark Day rather than just read about it. In short: New England's Dark Day occurred on May 19, 1780, when an unusual darkening of the daytime sky was observed over the New England states and parts of eastern Canada. The darkness was so complete that candles were required from noon on.

New England's Dark Day — main illustration
New England's Dark Day — illustration

Key takeaways

  • New England's Dark Day belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect New England's Dark Day to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of New England's Dark Day from memory before moving on to harder problems.

Reference excerpt

New England's Dark Day occurred on May 19, 1780, when an unusual darkening of the daytime sky was observed over the New England states and parts of eastern Canada. The darkness was so complete that candles were required from noon on. It did not disperse until the middle of the next night. The primary cause of the event is now believed to have been a combination of smoke from forest fires, a thick fog, and cloud cover. This was concluded more than two centuries after the event.

Range of the darkness According to Professor Samuel Williams of Harvard College, the darkness was seen at least as far north as Portland, Maine, and extended southward to New Jersey. The darkness was not witnessed in Pennsylvania. Revolutionary War soldier Joseph Plumb Martin noted:

We were here [New Jersey] at the time the "dark day" happened, (19th of May;) it has been said that the darkness was not so great in New-Jersey as in New-England. How great it was there I do not know, but I know that it was very dark where I then was in New-Jersey; so much so that the fowls went to their roosts, the cocks crew and the whip-poor-wills sung their usual serenade; the people had to light candles in their houses to enable them to see to carry on their usual business; the night was as uncommonly dark as the day was.

Progress The earliest report of the darkness came from Rupert, Vermont, where the sun was already obscured at sunrise. Professor Samuel Williams observed from Cambridge, Massachusetts, "This extraordinary darkness came on between the hours of 10 and 11 a.m. and continued till the middle of the next night." Reverend Ebenezer Parkham of Westborough, Massachusetts, reported peak obscurity to occur "by 12," but did not record the time when it first arrived. At Harvard College, the obscuration was reported to arrive at 10:30 a.m., peaking at 12:45 p.m. and abating by 1:10 p.m., but a heavy overcast remained for the rest of the day. The obscuration was reported to have reached Barnstable, Massachusetts, by 2:00 p.m., with peak obscurity reported to have occurred at 5:30 p.m. Roosters crowed, woodcocks whistled, and frogs peeped as if night had fallen at 2:00 p.m. in Ipswich, Massachusetts. A witness reported that a strong sooty smell prevailed in the atmosphere and that rain water had a light film over it that was made up of particles of burnt leaves and ash. Contemporaneous reports also indicated that ash and cinders fell on parts of New Hampshire to a depth of six inches (15 cm).

Other atmospheric phenomena For several days before the Dark Day, the sun as viewed from New England appeared to be red, and the sky appeared yellow. While the darkness was present, soot was observed to have collected in rivers and in rain water, suggesting the presence of smoke. Also, when the night really came in, observers saw the moon colored red. For portions of New England, the morning of May 19, 1780, was characterized by rain, indicating that cloud cover was present.

Religious interpretations Most people found the darkness to be baffling and inexplicable. Many applied religious interpretations to the event. In Connecticut, a member of the Governor's council (renamed the Connecticut State Senate in 1818), Abraham Davenport, became most famous for his response to his colleagues' fears that it was the Day of Judgment:

I am against adjournment. The day of judgment is either approaching, or it is not. If it is not, there is no cause for an adjournment; if it is, I choose to be found doing my duty. I wish therefore that candles may be brought. Davenport's courage was commemorated in the poem "Abraham Davenport" by John Greenleaf Whittier. Edwin Markham also commemorated the event in his poem "A Judgement Hour," found in The Gates of Paradise and Other Poems. Seventh-day Adventist author and editor Arthur S. Maxwell mentions this event in his The Bible Story series (volume 10). The significance of the incident is still debated among Adventist scholars today. Progressive Adventists do not necessarily interpret this as a sign that Jesus would soon return, but traditional historic and conservative Adventists who hold Ellen G. White's writings in higher regard still consider this date as one of the fulfillments of biblical prophecy, specifically Matthew 24:29, in which Jesus declares to his disciples, "Immediately after the distress of those days [of anti-Christian persecution,] the sun will be darkened, and the moon will not give its light..." (NIV) Similarly, the Public Universal Friend treated the event as fulfillment of some prophecies of the Book of Revelation. The Dark Day also provided motivation for Ann Lee, leader of the Shakers (then living in Niskayuna, New York), to present her religious testimony to the public.

Cause Centuries after the event, studies of forests revealed the most likely cause The likely cause of the Dark Day was smoke from extensive forest fires, for which there is contemporary evidence. Researchers examining tree rings and fire scars in present-day Algonquin Provincial Park in Ontario, Canada, have identified a fire in 1780 and attribute the Dark Day to that.

In popular culture The 2025 film The Testament of Ann Lee depicts the Dark Day and its relation to Ann Lee and Shakerism, but inaccurately depicts the darkness as being caused by a solar eclipse.

See also Chinchaga Fire (1950, Canada) Orange Skies Day (2020, Northern California) Bridge Fire (2024, Victorville CA) 2019–20 Australian bushfire season which turned the sky yellow over much of New Zealand 2023 Canadian wildfires

References

Further reading

External links

May 2004 Weather Almanac entry Joseph Dow's history of Hampton entry Archived May 20, 2018, at the Wayback Machine "Abraham Davenport & The Dark Day" at The Stamford Historical Society What Caused New England's Dark Day? WIRED: Darkness at Noon Enshrouds New England Bradford, Alden (1843). New England Chronology. Boston: S.G. Simpkins. hdl:2027/mdp.39015059480932. Uncommonly dark day de Castella, Tom (May 18, 2012). "What Caused the Mystery of the Dark Day?". BBC News Magazine. Retrieved May 18, 2012.

Illustrations

New England's Dark Day: 1780 map of the region
1780 map of the region
New England's Dark Day: "Dark Day" by Delos Palmer depicting Abraham Davenport and Governor Jonathan Trumbull.
"Dark Day" by Delos Palmer depicting Abraham Davenport and Governor Jonathan Trumbull.

Worked examples

Example 1 — a first encounter with New England's Dark Day

Start with the simplest possible case. Write down what New England's Dark Day claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to New England's Dark Day before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about New England's Dark Day ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of New England's Dark Day

In research
New England's Dark Day appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses New England's Dark Day in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
New England's Dark Day is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1780 disasters, 1780 in Connecticut, 1780 in New Hampshire, so understanding it makes those chapters shorter.
In everyday life
Look for New England's Dark Day outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study New England's Dark Day in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what New England's Dark Day means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain New England's Dark Day out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is New England's Dark Day in simple terms?

New England's Dark Day occurred on May 19, 1780, when an unusual darkening of the daytime sky was observed over the New England states and parts of eastern Canada. The darkness was so complete that candles were required from noon on.

Why does New England's Dark Day matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study New England's Dark Day?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on New England's Dark Day.

Tags

  • 1780 disasters
  • 1780 in Connecticut
  • 1780 in New Hampshire
  • 1780 in New Jersey
  • 1780 in New York (state)
  • 1780 in North America
  • 1780 in the British Empire
  • 1780 in the Province of Massachusetts Bay
  • 1780s in Canada
  • 1780s in Rhode Island
  • 1780s in Vermont
  • 1780s natural disasters

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