January 18
Updated November 6, 2026 · Edited by the JanuaryCalendar.com team
January 18 is Winnie the Pooh Day, marking the birthday of author A. A. Milne in 1882. The date saw the proclamation of the German Empire at Versailles in 1871 and the opening of the Paris Peace Conference in 1919, and it begins the annual Week of Prayer for Christian Unity.
January 18 is the 18th day of the year in the Gregorian calendar. 347 days remain in the year (348 in leap years). In 2027, January 18 falls on a Monday.
- Day of year
- 18
- Days left
- 347 (348 in leap years)
- Zodiac sign
- Capricorn ♑︎
- Birthstone
- Garnet
- ISO week (2027)
- Week 3
- Weekday (2027)
- Monday
Holidays and observances on January 18
- Unofficial Winnie the Pooh Day (US and UK) — Marks A. A. Milne's birthday in 1882.
- Religious Week of Prayer for Christian Unity begins (Worldwide) — Runs January 18–25 in the Northern Hemisphere.
- US federal Martin Luther King Jr. Day falls on January 18 in 2021, 2027, 2038 (third Monday of January)
Events on January 18 in history
- 1778 – Captain James Cook sighted the Hawaiian Islands, becoming the first known European to reach them.
- 1788 – The first ships of Britain's First Fleet reached Botany Bay, bringing convicts to found a colony in Australia.
- 1871 – Wilhelm I of Prussia was proclaimed German Emperor in the Hall of Mirrors at Versailles.
- 1911 – Pilot Eugene Ely made the first aircraft landing on a ship, the USS Pennsylvania, in San Francisco Bay.
- 1919 – The Paris Peace Conference opened to negotiate the treaties that ended World War I.
- 1943 – Soviet troops opened a land corridor to besieged Leningrad, partly breaking the German blockade.
- 1958 – Willie O'Ree became the first Black player in the NHL, debuting for the Boston Bruins.
- 2002 – Sierra Leone's President Ahmad Tejan Kabbah declared the country's civil war officially over.
- 2005 – Airbus unveiled the A380, the world's largest passenger airliner, in Toulouse, France.
Famous birthdays on January 18
- 1689 – Montesquieu, French philosopher, author of The Spirit of Laws
- 1779 – Peter Mark Roget, British physician who compiled Roget's Thesaurus
- 1782 – Daniel Webster, American statesman and orator
- 1867 – Rubén Darío, Nicaraguan poet who led modernismo
- 1882 – A. A. Milne, English author of Winnie-the-Pooh
- 1892 – Oliver Hardy, American comic actor of Laurel and Hardy
- 1904 – Cary Grant, English-American film star
- 1911 – Danny Kaye, American actor, singer and comedian
- 1955 – Kevin Costner, American actor and director
- 1971 – Pep Guardiola, Spanish football player and manager
What day is January 18?
Frequently asked questions
Why is January 18 Winnie the Pooh Day?
It marks the birthday of A. A. Milne, author of the Winnie-the-Pooh books, who was born in London on January 18, 1882. His first collection of Pooh stories, Winnie-the-Pooh, was published in 1926.
What happened at Versailles on January 18, 1871?
King Wilhelm I of Prussia was proclaimed German Emperor in the Hall of Mirrors at the Palace of Versailles, during the Franco-Prussian War, marking the unification of Germany. Exactly 48 years later, on January 18, 1919, the Paris Peace Conference opened after World War I.
When is the Week of Prayer for Christian Unity?
In the Northern Hemisphere it runs each year from January 18 to January 25, when churches of different denominations pray together. Some churches in the Southern Hemisphere hold it around Pentecost instead.
What day of the week is January 18, 2027?
January 18, 2027 is a Monday. In 2028 it falls on a Tuesday.
What zodiac sign is January 18?
People born on January 18 are Capricorns (December 22 – January 19) in Western astrology.