[DeplorablePaul]

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[1] and parts of eastern Canada.[2] The primary cause of the event is believed to have been a combination of smoke from forest fires,[3] a thick fog, and cloud cover. The darkness was so complete that candles were required from noon on. It did not disperse until the middle of the next night.[4][5]

https://en.wikipedia.org/wiki/New_England%27s_Dark_Day

[SunkenCiv]

Thanks DP.