Wednesday · November 11, 2026
Edited daily
American history, reported as it happened
Made for the 250th
On this day › October 15

What happened on October 15 in American history

October 15 is the 288th day of the year (the 289th in leap years). Patriot Compass has published 8 stories from October 15 spanning 1781 to 2016. Among them: in 1781, Graham's riders break the Tory line at Raft Swamp; darkness ends North Carolina's last battle; and in 1954, Hazel comes ashore in the Carolinas; by nightfall it is drowning Toronto.

1781

Graham's riders break the Tory line at Raft Swamp; darkness ends North Carolina's last battle

Four days before Cornwallis surrenders at Yorktown, a swamp causeway fight scatters the last organized Loyalist force in the state.
1954

Hazel comes ashore in the Carolinas; by nightfall it is drowning Toronto

A Category 4 landfall near Calabash and a flash flood on the Humber River happen hundreds of miles apart, on the same day.
1956Member story · 1776 Club

IBM hands programmers a manual for talking to a machine in algebra

The FORTRAN Automatic Coding System manual reaches the IBM 704's users three years after Backus pitched a way around hand-written machine code.
1991Member story · 1776 Club

A cosmic ray hits Utah with the energy of a thrown baseball

The Fly's Eye detector catches a flash of ultraviolet light that shouldn't be possible under the physics of the day.
1997

A Titan IVB rises from Cape Canaveral, carrying Cassini toward Saturn

The seven-year voyage begins with 72 pounds of plutonium and a DVD of 616,400 signatures tucked aboard.
2001Member story · 1776 Club

Galileo threads Jupiter's radiation belts for a 112-mile pass over Io

The spacecraft's instruments catch electrical currents linking the volcanic moon to Jupiter itself.
2008Member story · 1776 Club

The Dow sheds 733 points; only Black Monday fell faster

A 7.87 percent close puts the 2008 financial crisis in the same sentence as 1987.
2016Member story · 1776 Club

In Kigali, 197 nations agree to phase down the coolants replacing the last banned chemicals

The chemicals that replaced ozone-killing CFCs turned out to trap heat thousands of times more effectively than carbon dioxide.