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Encouraging Observation, Appreciation & Understanding

International Observe the Moon Night is a worldwide, public celebration of lunar science and exploration held annually since 2010. On October 16, 2021, your library is invited to join this world-wide celebration by hosting an event on one day each year to look at and learn about our Moon together.

International Observe the Moon Night is usually held in the fall, when the Moon is around first quarter. Fall in the Northern Hemisphere is generally a good time, because of school schedules and the weather, and a first quarter Moon is visible in the afternoon and evening, a convenient time for most hosts and participants.

NASA’s Website
Viewing Guide

Earth’s Moon: The Basics

Our moon makes Earth a more livable planet by moderating our home planet’s wobble on its axis, leading to a relatively stable climate, and creating a tidal rhythm that has guided humans for thousands of years.

Quick Moon Facts
– Only celestial body that’s been visited by humans.
– Minimum temperature: -387 degrees Fahrenheit.
– Maximum temperature: 253 degrees Fahrenheit.
– Distance from the Earth: About 239,000 miles.
– “Year” (time to orbit the Earth): About 27 Earth days.
– Day: About 27 Earth days.

About Earth’s Moon
Ten Things to Know

Join an International Lunar Celebration!

International Observe the Moon Night (InOMN) is a worldwide, public celebration of lunar science and exploration held annually since 2010. Join the STAR Net team and Vivian White of the Astronomical Society of the Pacific (ASP) and NASA’s Night Sky Network (NSN) to learn about how you can make the best of this annual event through hands-on activities, subject matter experts, NASA resources, and more!

Watch Recorded Webinar

Pop Culture and Misconceptions

Our lunar neighbor has inspired stories since the first humans looked up at the sky and saw its gray, cratered face. Some observers saw among the craters the shape of a person’s face, so stories refer to a mysterious “Man in the Moon.” Hungrier observers compared its craters to cheese and dreamed of an entire sphere made of delicious dairy products.

While we do not yet have a Moon colony, spacecraft have left lots of debris on the lunar surface, and astronauts have planted six American flags on the Moon. But that doesn’t mean the United States has claimed the Moon; in fact, an international law written in 1967 prevents any single nation from owning planets, stars, or any other natural objects in space.

Learn About Popular Misconceptions

Programming Resources

Below we have assembled a collection of resources that include vetted STEM activities, printable materials (PDF format), gallery items and important webpages that your library can utilize for your International Observe the Moon Night programming.

STEM Activities

Loony Lunar Phases
Tour the Moon
Moon in Action
Crater Creations
Penny Moon


Press Release Template
Save The Date Postcard
Moon and Beyond Poster
Moon Maps
Moon Landing Sites


Lunar Tunes
Fact Sheets


Orbiter Spacecraft
Moon Interactive
NASA Moon Guide
NASA Moon Trek
NASA Photo Tips

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