Aug 19, 1692 (O.S.)

THESIS Even the date moves. LITMassachusetts used the Julian calendar in 1692 (Britain switched in 1752). The 19 August 1692 hangings (O.S.) fall on 29 August in the Gregorian calendar, a 10-day gap in the 1600s and 11 days by 1776. COMPUTEDPrecession, from the star charts, put Polaris farther from the pole in 1692 than in 1776 or 2026. The BSC sky is precessed to each date (stars only; the planet ephemeris is not valid before 1800, so planets are omitted). Cross-link Sky Tonight and As Above.

MNEMONIC "Ten days lost to the Pope's calendar; Polaris still drifting home."

year: 1692

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