Stargazing Planner: Is Tonight Worth Going Out For?
Moonlight, cloud, and streetlights decide a stargazing night before you leave the house. This planner scores all three together.
What is the Stargazing Planner?
A good stargazing night needs dark skies, clear air, and little moonlight. Enter the moon phase, cloud cover, and light pollution, and this tool scores the night out of 100 with a plain reading.
How to use it
- Enter your values in the fields provided.
- Click Score My Night.
- Read the result and adjust an input if you want a different outcome.
Worked example
A new moon, 10 percent cloud, and low light pollution score 97 out of 100: an excellent night.
What score is a new moon night with 10 percent cloud and low light pollution?
The moon gives 40, low light pollution gives 30, and clear skies give 27, totalling 97 out of 100, an excellent night.
Frequently asked questions
What do I enter to get a result?
Fill in every field with your own numbers or choices, then run the tool. Empty number fields count as zero, so check them before you trust the output.
Can I reuse this result elsewhere?
Yes. The result is calculated in your browser from the values you entered, so you can copy the numbers into your own notes or plan.