SPEAKING of the dark day of May 19, 1780, Noah Webster, in the New Haven Daily Herald, says:
"No satisfactory cause has yet been assigned."
Also in his Dictionary, Unabridged:
"The Dark Day, May 19, 1780, so called on account of a remarkable darkness on that day, extending over all New England. In some places persons could not see to read common print in the open air for several hours together. . . . The true cause of this remarkable phenomenon is not known."