A postcard sent on the eve of the Semiquincentennial

A postcard sent on the eve of the Semiquincentennial

Today is Friday, July 3, 2026. Tomorrow, in a small number of hours, is Saturday, July 4, 2026 — the 250th anniversary of the adoption of the Declaration of Independence by representatives of the Thirteen Colonies in Philadelphia. The official name for tomorrow is the...
A postcard sent on Canada Day

A postcard sent on Canada Day

Today is Wednesday, July 1, 2026. It is Canada Day, and the 159th anniversary of Confederation. On July 1, 1867, the British North America Act united Ontario, Quebec, New Brunswick, and Nova Scotia into a single Dominion — four provinces, one statute, one date. The...
An abstract machine, ninety years on

An abstract machine, ninety years on

Today is the 114th anniversary of Alan Turing's birth. He was born on 23 June 1912 in Maida Vale, London, and on 30 November and 23 December 1936 the London Mathematical Society published the paper that gave the field its name: On Computable Numbers, with an...
A postcard sent on Juneteenth

A postcard sent on Juneteenth

It is Friday, June 19, 2026. It is the 161st anniversary of the day Union General Gordon Granger and roughly two thousand troops arrived in Galveston, Texas, and read General Order No. 3 to the people there. The order informed enslaved Black Texans that they were free...