January 11
Updated November 6, 2026 · Edited by the JanuaryCalendar.com team
January 11 is the anniversary of the first insulin injection given to a person with diabetes, in Toronto in 1922, and of the 1964 US Surgeon General's report linking smoking to lung cancer. In the US it is National Human Trafficking Awareness Day.
January 11 is the 11th day of the year in the Gregorian calendar. 354 days remain in the year (355 in leap years). In 2027, January 11 falls on a Monday.
- Day of year
- 11
- Days left
- 354 (355 in leap years)
- Zodiac sign
- Capricorn ♑︎
- Birthstone
- Garnet
- ISO week (2027)
- Week 2
- Weekday (2027)
- Monday
Holidays and observances on January 11
- Official National Human Trafficking Awareness Day (US) — Falls within National Slavery and Human Trafficking Prevention Month, observed throughout January.
- Astronomy Full moon (Wolf Moon) on January 11 in 2028 (Eastern Time)
Events on January 11 in history
- 1787 – William Herschel discovered Titania and Oberon, the two largest moons of Uranus.
- 1908 – President Theodore Roosevelt designated the Grand Canyon a national monument; it became a national park in 1919.
- 1922 – Leonard Thompson, a 14-year-old with diabetes, became the first person to receive an insulin injection, at Toronto General Hospital.
- 1923 – French and Belgian troops occupied Germany's Ruhr region to force payment of World War I reparations.
- 1935 – Amelia Earhart took off from Honolulu on the first solo flight from Hawaii to the US mainland, landing in Oakland the next day.
- 1946 – The People's Republic of Albania was proclaimed, with Enver Hoxha as its leader.
- 1964 – US Surgeon General Luther Terry released a landmark report linking cigarette smoking to lung cancer.
- 1973 – Baseball's American League voted to adopt the designated hitter rule, first used that season.
Famous birthdays on January 11
- 1807 – Ezra Cornell, Co-founder of Cornell University and Western Union
- 1842 – William James, American philosopher and psychologist
- 1859 – George Curzon, Viceroy of India and British statesman
- 1887 – Aldo Leopold, Conservationist, author of A Sand County Almanac
- 1906 – Albert Hofmann, Swiss chemist who first synthesized LSD
- 1923 – Carroll Shelby, American car designer and racing driver
- 1934 – Jean Chrétien, 20th prime minister of Canada
- 1971 – Mary J. Blige, American R&B and hip-hop singer
What day is January 11?
Frequently asked questions
What happened on January 11, 1922?
Leonard Thompson, a 14-year-old with diabetes, received the first insulin injection given to a patient, at Toronto General Hospital. The treatment was developed by a University of Toronto team that included Frederick Banting and Charles Best.
When is National Human Trafficking Awareness Day?
It is observed in the US every January 11. The day falls during National Slavery and Human Trafficking Prevention Month, which runs through January.
What did the January 11, 1964 Surgeon General's report find?
The report by US Surgeon General Luther Terry concluded that cigarette smoking is a cause of lung cancer in men. It is widely seen as a turning point in US public health policy on tobacco.
What day of the week is January 11, 2027?
January 11, 2027 is a Monday. In 2028 it falls on a Tuesday.
What zodiac sign is January 11?
People born on January 11 are Capricorns (December 22 – January 19) in Western astrology.