The night sky on the night of Paul Revere's midnight ride — 18 April 1775

On the night of 18 April 1775 Paul Revere and William Dawes rode out from Boston to warn Samuel Adams and John Hancock, at Lexington, that British troops were on the move. Two lanterns hung in the steeple of the Old North Church signalled that the regulars were crossing by water. The next morning the first shots of the American Revolutionary War were fired at Lexington and Concord.

The sky over Old North Church, Boston, Massachusetts, USA

This is the real sky above Old North Church, Boston, Massachusetts, USA (42.37°N, 71.05°W) on 18 April 1775 at 22:00 Boston local mean time (UTC−4:44) that night (1775-04-19 02:44 UTC). The Sun was 30° below the horizon: it was full night. The Moon (waning gibbous, 88% lit) was 1° up in the south-east. Planets above the horizon: Mars (55° in the south-west) and Saturn (46° in the south). Brightest named stars up: Arcturus, Vega, Capella, Procyon and Betelgeuse.

Star map of the sky over Old North Church, Boston, Massachusetts, USA on 18 April 1775 at 22:00 MarsSaturnMoon ArcturusVegaCapellaProcyonBetelgeuseSpicaPolluxDeneb NSEW
753 stars brighter than magnitude 5 above the horizon, with the constellation figures. Look up: north at the top, east on the left.

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