A little reason to celebrate
Moon Day
History ยท July 20
Moon Day looks up at Earth's nearest neighbor and the long human effort to reach it, from backyard stargazing to the history of lunar exploration.
Moon Day falls on Tuesday, July 20, 2027. That is 266 days away.
The Moon is the one object in the night sky that nearly everyone has looked at closely. Moon Day, also called Space Exploration Day, gives that habit a little more attention, with a nod to the people who studied it, mapped it and eventually walked on it.
The Moon is a rocky body with no air to speak of, so its surface keeps marks for a very long time. The dark patches you can see without a telescope are old plains of cooled lava, and the bright areas are higher, heavily cratered ground. It always shows roughly the same face to Earth, which is why the pattern people call the man in the moon never seems to turn away.
Americans hold a particular place in this story. NASA's Apollo missions carried astronauts to the lunar surface and brought them home with rocks and soil that scientists still study. Footprints left there are likely still sitting in the dust, since there is no wind to blow them away.
Most people mark the day simply. Some step outside after dark to find the Moon and notice its phase. Others watch footage of the landings, visit a planetarium or science museum, or read about how the missions worked. Even a pair of ordinary binoculars turns the craters along the edge of the lit side into sharp, shadowed bowls.
The best view is often not at full Moon. Along the line between light and dark, low sunlight stretches the shadows of mountains and crater walls, and the surface looks almost carved.
Ways to celebrate
- Look for the Moon tonight and note which phase it is in.
- Scan the edge between light and shadow with binoculars.
- Watch archival footage of an Apollo landing.
- Visit a local planetarium or science museum.
- Sketch the Moon's dark patches from your window.
Dates
| Year | Date |
|---|---|
| 2026 | Monday, July 20 |
| 2027 | Tuesday, July 20 |
| 2028 | Thursday, July 20 |
| 2029 | Friday, July 20 |
| 2030 | Saturday, July 20 |
Also on July 20
Categories: History days