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International Skeptics Day

On International Skeptics Day, it's okay to question everything. Embrace your inner skeptic and challenge the status quo!

Tuesday

October 2026

Last updated February 7, 2026 · by the Holiday Calendar Team

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YEARLY DATEOctober 13

OBSERVED INInternationally

CATEGORYFun

SUBCATEGORYUnique

INTRO

Introduction

PHOTO

Get ready to question everything on International Skeptics Day, celebrated on October 13! This day was first established in the early 1990s as a way to celebrate critical thinking and encourage people to question and challenge beliefs, ideas, and information. So if you tend to be skeptical or have a tendency to doubt things, this is the perfect day for you! Embrace your inner skeptic and have some fun with it – who knows what interesting discoveries you might make along the way. So go ahead and put your thinking caps on, because today is all about questioning the world around us.

TIMELINE

International Skeptics Day Timeline

Socratic Method of Questioning

Greek philosopher Socrates, recognized as one of the founders of Western philosophy, developed the "Socratic Method," which encouraged critical thinking and questioning of assumptions.

Scientific Skepticism Emerges

The Renaissance era saw the rise of scientific skepticism, which emphasizes empirical evidence and the scientific method.

Psychical Research Institutes

Institutes for psychical research began operating in the UK and US, investigating paranormal phenomena from a scientific and skeptical perspective.

The Skeptics Society Founded

The Skeptics Society, a nonprofit organization that promotes scientific skepticism, was founded by Michael Shermer.

International Skeptics Day Established

International Skeptics Day was established in the early 1990s, encouraging people to practice critical thinking and challenge accepted beliefs and ideas.

GET INVOLVED

How to Celebrate International Skeptics Day

Host a "Skeptics Only" game night

Invite your fellow skeptics over for a game night filled with games that test critical thinking and reasoning skills. This is a fun and interactive way to celebrate International Skeptics Day.

ATTEND

Attend a lecture or seminar on skepticism

Search for local events or online webinars on skepticism and attend one to expand your knowledge and celebrate the day with like-minded individuals.

CREATE

Create a "skeptical" scavenger hunt

Gather some friends and create a scavenger hunt filled with clues and challenges that test critical thinking skills. This is a fun way to celebrate while also exercising your mind.

WATCH

Watch a documentary about skepticism

Gather some friends and watch a thought-provoking documentary about skepticism. This is a great way to learn and celebrate the day together.

START

Start a discussion group about skepticism

Gather a group of friends or colleagues and start a regular discussion group about skepticism. This is a great way to celebrate the day and continue learning and challenging each other's beliefs.

WHY THIS DAY MATTERS

Why We Love International Skeptics Day

It fosters healthy skepticism

Being skeptical doesn't mean being cynical or closed-minded. International Skeptics Day celebrates the importance of keeping an open mind while approaching new ideas or information. It teaches us to examine evidence critically before accepting it as truth - a valuable skill in today's world of easily spread misinformation.

It promotes critical thinking

International Skeptics Day encourages people to question and challenge information that is presented to them. It celebrates the value of skepticism and promotes critical thinking skills, which are important for making informed decisions in our daily lives.

It's a chance to learn something new

On this day, people can share their knowledge and experiences with each other, leading to interesting and informative discussions. It's a great opportunity to learn about different perspectives and expand our understanding of the world around us.

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