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Calculating Lunar Eclipse In Certain Place

Calculating moon eclipses accurately requires astronomical libraries and complex celestial mechanics. However, here's a Node.js function using the astronomy-engine library (https://www.npmjs.com/package/astronomy-engine) to provide a basic indication of a potential lunar eclipse at a specific location.

Explanation:

• The code imports the astronomy-engine library.
• The checkLunarEclipse function takes latitude, longitude, and date as arguments.
• It creates an Observer object representing the location.
• It defines search options with a date range of one day before and after the given date.
• It uses astronomy.searchLunarEclipse within a try-catch block to search for eclipses during that timeframe.
• If an eclipse is found, the function returns true, otherwise false.
• The example usage demonstrates calling the function with Jakarta coordinates and the current date.
• It checks the result and logs a message accordingly.

Limitations:

• This is a simplified approach and doesn't guarantee an actual eclipse.
• It only indicates the possibility of an eclipse within a day.
• Precise eclipse details (visibility, duration, etc.) require advanced calculations.