International Moon Day
Marking the Apollo 11 landing — 'one small step' on July 20, 1969.
1 min read · Fact-checked · Updated for 2026
About International Moon Day
International Moon Day, declared by the UN in 2021, commemorates July 20, 1969, when Apollo 11's Eagle lander touched down on the Sea of Tranquility and Neil Armstrong took humanity's first step on another world. The day celebrates lunar science and the new wave of Moon missions, from Artemis to international landers.
Read more on Wikipedia'One Small Step' — What Happened on July 20, 1969
At 20:17 UTC on July 20, 1969, the lunar module Eagle touched down on the Sea of Tranquility with about 25 seconds of fuel to spare. Six hours later, Neil Armstrong stepped onto the surface before an estimated 600 million television viewers — then the largest audience in history — followed by Buzz Aldrin, while Michael Collins orbited above.
What Apollo Left Behind — and Brought Back
Between 1969 and 1972, twelve people walked on the Moon across six Apollo landings, bringing back 382 kg of lunar rock and soil that scientists still study today. The missions left behind retroreflectors that observatories still bounce lasers off to measure the Earth–Moon distance to millimeter precision — the Moon, it turns out, drifts about 3.8 cm farther away every year.
The New Race to the Moon
The UN declared International Moon Day in 2021, just as lunar exploration reignited. NASA's Artemis program aims to return humans — including the first woman — to the lunar surface, while India's Chandrayaan-3 made the first landing near the lunar south pole in 2023, and private landers have begun reaching the surface. The Moon is once again the busiest destination in space.
When is International Moon Day?
International Moon Day is celebrated every year on July 20. Upcoming dates:
| Year | Date | Day of week | |
|---|---|---|---|
| International Moon Day 2026 | July 20, 2026 | Monday | View date → |
| International Moon Day 2027 | July 20, 2027 | Tuesday | View date → |
| International Moon Day 2028 | July 20, 2028 | Thursday | View date → |
| International Moon Day 2029 | July 20, 2029 | Friday | View date → |
| International Moon Day 2030 | July 20, 2030 | Saturday🎉 weekend | View date → |
How to Celebrate International Moon Day
- 🎯Watch a documentary or read an article connected to International Moon Day.
- 💡Visit a museum, planetarium or observatory — many hold events on this day.
- 📣Share a mind-blowing fact with #InternationalMoonDay.
Official hashtag: #InternationalMoonDay
Frequently Asked Questions
When is International Moon Day 2026?
International Moon Day 2026 is on Monday, July 20, 2026.
How many days until International Moon Day?
There are 7 days until International Moon Day (July 20, 2026).
What category is International Moon Day?
International Moon Day is categorized as a Science event.
Is International Moon Day a public holiday?
International Moon Day is an observance day, not typically a public holiday. Check your country's official calendar for local public holidays.
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