October 13

International Skeptics Day

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

Yearly Date
October 13
Holiday Calendar
Last updated February 7, 2026 by the Holiday Calendar Team
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Introduction

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.

International Skeptics Day Timeline

400s BC
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.
1500s
Scientific Skepticism Emerges
The Renaissance era saw the rise of scientific skepticism, which emphasizes empirical evidence and the scientific method.
1880s
Psychical Research Institutes
Institutes for psychical research began operating in the UK and US, investigating paranormal phenomena from a scientific and skeptical perspective.
1976
The Skeptics Society Founded
The Skeptics Society, a nonprofit organization that promotes scientific skepticism, was founded by Michael Shermer.
1990s
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.

How to Celebrate International Skeptics Day

1

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.

2

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.

3

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.

4

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.

5

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 We Love International Skeptics Day

A

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.

B

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.

C

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.

Holiday Dates

Year
Date
Day
2023
Oct 13
Friday
2024
Oct 13
Sunday
2025
Oct 13
Monday
2026
Oct 13
Tuesday
2027
Oct 13
Wednesday