World Logic Day
Logic — the foundation of mathematics, philosophy, and artificial intelligence.
About
World Logic Day is celebrated on January 14 to promote logic as a discipline central to knowledge, science, and technology. Logic underpins fields from mathematics and philosophy to artificial intelligence and law. The day encourages educators, researchers, and students worldwide to engage with logical thinking and its applications.
History
January 14 was chosen to mark the death anniversary of Kurt Gödel (1978) and the birthday of Alfred Tarski (1901) — two giants of 20th-century mathematical logic. UNESCO proclaimed January 14 as World Logic Day in 2019, following a proposal by the International Union of History and Philosophy of Science.
Where It's Observed
How to Participate
- 01Solve a logic puzzle or brain teaser
- 02Learn about formal logic, syllogisms, or Boolean algebra
- 03Explore the contributions of Gödel, Tarski, or Aristotle to logic
- 04Discuss logical fallacies and how to spot them in everyday arguments
Frequently asked questions
When is World Logic Day?+
World Logic Day is observed annually on January 14. The date is fixed each year — January 14 — and does not shift based on the lunar calendar or weekday.
What is World Logic Day?+
World Logic Day is celebrated on January 14 to promote logic as a discipline central to knowledge, science, and technology. Logic underpins fields from mathematics and philosophy to artificial intelligence and law. The day encourages educators, researchers, and students worldwide to engage with logi…
Is World Logic Day a public holiday?+
World Logic Day is an international observance or awareness day, not a public holiday in most countries. It does not typically result in days off work or school closures, though some countries and organisations hold official events.
How can I participate in World Logic Day?+
Solve a logic puzzle or brain teaser Learn about formal logic, syllogisms, or Boolean algebra Explore the contributions of Gödel, Tarski, or Aristotle to logic These are some of the most accessible ways to engage with the day's purpose.
Which countries observe World Logic Day?+
Global — UNESCO initiative.
Mark the date
Download a free printable calendar for 2027 and never miss World Logic Day.