Astronomy Essentials

International Observe the Moon Night is October 1

Multiple images of the setting moon.
View at EarthSky Community Photos. | Our friend Meiying Lee in Taipei, Taiwan caught the September 29, 2022, waxing crescent moon as it set, at 12-second intervals. Then she stacked the result using the software Sequator156. Earlier photos on the left. Later photos on the right. See how the moon turns red as it sets? As Meiying explains, “This is a phenomenon caused by atmospheric scattering.” For you moon-watchers … a global, public event – International Observe the Moon Night – is October 2, 2022. Learn how to participate here.

International Observe the Moon Night 2022

International Observe the Moon Night (InOMN) is October 1, 2022. It’s a worldwide event for moon-lovers, held annually since 2010. It’s scheduled each northern fall, on a night when the moon is near the first quarter phase. In October, 2022, the first quarter moon is October 3. So you’ll see a waxing crescent moon in the sky on Saturday evening.

Observing the moon with a telescope around quarter-moon phases is more fun, because more detail is visible on the line between lunar light and dark (day and night). That line is called the terminator. On a waxing moon, that’s the line of sunrises, and just as at an earthly sunrise, shadows are longest along the lunar terminator. So lunar features stand out most clearly then. Also, look beyond the terminator for an illuminated mountain peak or crater rim that appears as a speck of light on the dark moon.

Click here to download NASA’s 2022 observe the moon map

Participating in International Observe the Moon Night

How can you participate? Will there be star parties with telescopes, or other events, in your area? Go to the InOMN website to find an event near you. There’s also information about how to host an InOMN event. And you can share pictures and highlights from your moon-watching fun on October 1.

Or would you rather participate online? The Virtual Telescope Project in Italy will be offering a live, online observing session, showing the moon over the beautiful skyline of Rome. This online, free session is scheduled for October 1, 2022, starting at 17:30 UTC (1:30 p.m. EDT). Translate UTC to your time.

Want to stay home and have fun observing the moon with your family? Try this article from NASA Night Sky Network: Weird ways to observe the moon

How to observe, safely

The InOMN website states:

Whether you are able to safely host a physical event or you are interested in planning a virtual event, we are here to help. Please observe in the way that is healthiest for your community and yourself …

Your event can be a small gathering of friends or family, an online program for thousands of visitors, or anything in between. The size, location, and agenda are for you to determine, based on public health guidance in your area, your interests and expertise, the interests and needs of your audience, and the resources you have available.

Though we encourage everyone to participate in International Observe the Moon Night on a specific date each year, we understand that this date may not work for everyone. You are welcome to host your event on a different day. The main objectives are for you and your audience to observe and learn about the moon as well as celebrate your personal and cultural connections to our nearest celestial neighbor.

Click here to register your event for International Observe the Moon Night

Go to the event’s website to look for an InOMN event near you

A partially illuminated moon before first quarter.
View at EarthSky Community Photos. | Cathy Adams in St Stephen, NB, Canada, captured this waxing crescent moon on September 1, 2022, and wrote “Our moon is always beautiful, no matter what phase!” Thank you, Cathy!
International Observe the Moon Night: Large full moon, with person and camera on tripod silhouetted against it.
Man and moon, from Martin Marthadinata in Surabaya, East Java, Indonesia. Thanks, Martin! Look here for online events, and events near you, for International Observe the Moon Night 2022, on October 1, 2022.

Bottom line: A global, public event – International Observe the Moon Night – is October 1, 2022. You can look for events near you and to learn how to participate online.

September 30, 2022
Astronomy Essentials

Like what you read?
Subscribe and receive daily news delivered to your inbox.

Your email address will only be used for EarthSky content. Privacy Policy
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.

More from 

EarthSky Voices

View All