* Lunar Calendar: A lunar calendar tracks the phases of the moon. You could use one to see what phase the moon will be in on a particular night. The phase of the moon is directly related to how much of the Earth is illuminated by the sun's light.
* Moon Phase Apps: These apps provide a visual representation of the moon's phase, often showing the Earth as seen from the moon. They can be helpful to visualize the illuminated portion of Earth that would be visible from the lunar surface.
* Celestial Map Apps: These apps let you point your phone at the sky and see what celestial objects are visible. They often include moon data, allowing you to see the moon's position in the sky and its illumination.
Why this is tricky:
* The Earth is always rotating: The moon "sees" different parts of the Earth as it orbits.
* The moon's perspective is different: A clock wouldn't be able to accurately show the constantly shifting view the moon has of the Earth, which changes throughout the lunar orbit.
Ultimately, while there isn't a "moon-view clock", you can use the tools above to get a good idea of what the moon might be "seeing" on any given night.
