• April Fool’s Day

    You gotta be kidding me ...For decades, April Fools Day has been a celebration of nonsense. Practical jokes and other foolish activities mark the morning hours of April 1st. But by one tradition, all foolish behavior must cease by noon, or roles will be reversed, and the joke will be on you! Foolery abounds in our 21st Century […]

  • Yuri’s Night, or Cosmonauts Day

    Yuri's Night, also called Cosmonauts Day, is a day in honor of Yuri Gagarin, who became the first human in space on April 12, 1961. Twenty years later on the same day the U.S. launched the first space shuttle. The Soviet Union first celebrated Cosmonauts Day in 1962, on the first anniversary of Gagarin successful flight […]

  • Ask An Atheist Day

    National Ask an Atheist Day (https://www.wheniscalendars.com/national-ask-an-atheist-day/) is a movible secular holiday occurring twice each year -- on the 3rd Thursday of April (anywhere from April 15 to April 21), and on the 3rd Thursday of September (from Sept 15 to Sep 21). As if atheists don't have enough to do already. "NAaA Day" is an opportunity […]

  • Earth Day

    Earth Day is a day to grow and diversify the environmental movement, and to mobilize our resources to promote a healthy, sustainable planet. Earth Day is the only Secular Holiday celebrated simultaneously around the globe by people of all backgrounds, faiths and nationalities. More than a half billion people participate in Earth Day campaigns every year. U.S. […]

  • National Day of Reason

    The National Day of Reason (http://en.wikipedia.org/wiki/National_day_of_reason) (NDoR), endorsed first in 2003 and honored by U.S. secularists, occurs on the first Thursday of May. NDoR is a response and counterbalance to the National Day of Prayer, designated by the US Congress since 1952. On this day all humanist Americans can join hands to celebrate rational thinking—a concept all can or should support. The goal: to […]

  • Towel Day

    Towel Day (http://towelday.org/) is the annual celebration of the life and writings of Douglas Adams (1952-2001), humorist, humanist, conservationist, science fiction writer, and social critic. On that day, fans around the universe proudly carry a towel in his honor. Why a towel? Don't panic, go to the website to see - or better yet, read The Hitchhiker's Guide […]

  • Opposite Day

    Some say the proper date is May 26, some say April 30, some say March 27th -- can you ever be sure? When someone says "Today is Opposite Day," he might be lying!  Opposite Day is a day to say the reverse of what you mean, with a wink, with a nod; a day when "no" means […]

  • Birthday of Science

    The Birthday of Science marks the day Thales of Miletus (in 585 BCE) correctly predicted a solar eclipse. A better choice might be the discovery of fire or the wheel, but we don't know exactly when that happened, or who did it. We do know about Thales. His prediction was significant because the idea of cause and effect (causality) applies to all […]

  • Hug an Atheist Day

    In 2009, freethinker William Bermudez started Hug an Atheist Day (http://www.weirdholiday.com/hug-an-atheist-day/) (June 1st) to poke fun at other groups popping up at the time to encouraged hugging. He called for people to run up and hug atheists or any nonbeliever in general, whether agnostic, skeptic, secular humanist, or with other heretical views. In the words of one […]

  • World Environment Day

    The goal of World Environment Day is to stimulate worldwide awareness of environmental issues, and to generate action for conservation. The United Nations General Assembly established World Environment Day (http://worldenvironmentday.global/) in 1972 to mark the opening of the Stockholm Conference on the Human Environment. Each year World Environment Day celebrations occur at a different location around […]