No founder, proclamation or launch announcement for National Albert Day has been identified. Its earliest traceable listing is an Internet Archive capture from August 2022, which dates the listing rather than the day.
The scholar who fixed November 15
Albert the Great died at Cologne on November 15, 1280, and the date stuck. He was a Dominican bishop who established the study of nature as a legitimate science within the Christian tradition, and he taught Thomas Aquinas.
Britannica calls him the only scholar of his age to be called the Great, a title used even before he died. The church took longer to agree. He was canonized on December 16, 1931, more than six centuries after his death, and Pope Pius XI made him a doctor of the church the same year.


