International Observe the Moon Night 2026 — Saturday 19 September

NASA says that **"On Saturday, Sept. 19, the public is invited to look up again with NASA events across the country, including the International Observe the Moon Night celebration held at NASA's Goddard Space Flight Center Visitor Center in Greenbelt, Maryland."** The announcement was published on **15 September 2026**.^[1]

★**This is a fixed calendar night, not a lunar phase.** The event is scheduled for a particular Saturday rather than for a full moon, which is why it does not line up with the **Harvest Moon on 26 September** — **two separate lunar occasions in the same month.**^[1]

For the Goddard event NASA states it is **"free and family friendly"** and that **"Registration is not required, although registering in advance will help the Visitor Center team plan for the event."**^[1]

★**Two details that decide whether a trip is worth it**: NASA says **"The event will take place rain or shine"** and that **"free parking is available at the Visitor Center."** **Cloud cover does not cancel it** — the programme runs regardless, though what you can see through a telescope obviously depends on the sky.^[1]

★**This page does not list the schedule for other NASA centres.** NASA says events are held **"across the country"** but the article describes the Goddard programme; **for other locations you would need NASA's own event listings.**^[1]

NASA calls it **"an annual celebration that brings people together to learn about the Moon and explore our connection to Earth's nearest celestial neighbor."** It notes that **"Since the program began in 2010, people around the world have participated through lunar observations, hands-on activities"** and related programmes.^[1]

At Goddard the article mentions a more technical strand as well — a look at **how scientists use real data to create videos and visualizations of the Moon** — alongside telescope observing for families.^[1]

NASA opens the piece by recalling that **"In April, the world watched as four humans circled the Moon for the first time in over 50 years with NASA's Artemis II mission."** The event is presented as a follow-on invitation to **"look up again."**^[1]

★**That sentence is framing, not a report on the mission.** Anything beyond "four crew, lunar flyby, April 2026" is **outside what this source establishes**, and this page does not extend it.^[1]

★**Everything here comes from one NASA article.** It is the organiser's own announcement, which makes it authoritative for what NASA plans to do, but **no second organisation is cited** and **no independent confirmation of turnout or logistics is included.**^[1]

The article points to a separate page for **registration, accessibility and other logistics**; **those details were not opened for this page**, so check NASA's event listing before travelling.^[1]