Annual observance

National Let's Laugh Day

March 19 Cultural / community observance Updated 2026-07-10

Celebrate National Let's Laugh Day ✨ in the Obscure Holiday Calendar app with themed artwork, reminders, and quick-share cards.

Overview

National Let's Laugh Day, observed annually on March 19th, encourages everyone to embrace the simple, yet profound, act of laughter. This unofficial holiday serves as a reminder to lighten up, share joy, and appreciate the numerous physical and mental health benefits that come with a good chuckle, promoting a more positive and connected community.

Why it matters: National Let's Laugh Day is observed on March 19. National Let's Laugh Day, observed annually on March 19th, encourages everyone to embrace the simple, yet profound, act of laughter. This unofficial holiday serves as a reminder to lighten up, share joy, and appreciate the numerous physical and mental health benefits that come with a good chuckle, promoting a more positive and connected community.

Origin and story

Laughter triggers the release of endorphins, the body's natural feel-good chemicals, which can reduce stress and elevate mood.

A hearty laugh can engage muscles in the face, diaphragm, and even provide a light cardio workout by increasing heart rate and oxygen intake.

Quick facts

  • DateMarch 19
  • TypeCultural / community observance
  • Great forFriends, Families, Classrooms, Teams

Ways to Observe National Let's Laugh Day

National Let's Laugh Day encourages laughter as a simple way to boost mood and reduce stress.

Find Something Funny

  • Watch a comedy
  • Share jokes or memes
  • Laugh with friends or family

Nobody actually knows who started this

Unlike most modern novelty holidays, Let's Laugh Day doesn't have a documented founder. Holiday researchers who specialize in tracking down these origins report they could find no creator, no founding organization, and no presidential proclamation behind it — it simply appeared around 2017, originally just as "Let's Laugh Day," with the word "National" tacked on by other sites a couple of years later.

What laughter actually does to your body

Make Laughter Part of the Day

  • Seek humor in small moments
  • Use laughter to reset your mood

Did You Know?

Laughter triggers the release of endorphins and can temporarily relieve pain and tension.

Fun facts

  • Laughter triggers the release of endorphins, the body's natural feel-good chemicals, which can reduce stress and elevate mood.
  • A hearty laugh can engage muscles in the face, diaphragm, and even provide a light cardio workout by increasing heart rate and oxygen intake.
  • Children typically laugh hundreds of times a day, while adults average about 15-20 laughs, highlighting the importance of consciously seeking humor.
  • Laughter can strengthen relationships by fostering a sense of belonging and improving teamwork.
  • Not only does laughter boost mood, but it can also enhance immune function and decrease pain perception.

Sources and attribution

Primary sources: Holiday Insights, "Let's Laugh Day" and HelpGuide.org, "Laughter is the Best Medicine".

External links may lead to third-party websites.


Continue your streak

Open one more holiday before you go to build daily momentum.

FAQ

When is National Let's Laugh Day?
It is observed on March 19 each year.
What is National Let's Laugh Day?
National Let's Laugh Day, observed annually on March 19th, encourages everyone to embrace the simple, yet profound, act of laughter. This unofficial holiday serves as a reminder to lighten up, share joy, and appreciate the numerous physical and mental health benefits that come with a good chuckle, promoting a more positive and connected community.
How do people celebrate National Let's Laugh Day?
People share jokes and seek out humor with others, since the holiday itself has no documented founder — it simply appeared online around 2017 as 'Let's Laugh Day' before other sites added 'National' a couple of years later.

Get the app

Thousands of obscure holidays, daily widgets, reminders, and fun facts—free on iOS and Android.

Recently viewed holidays