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Astronomy

Lunar Eclipse Calculator

· Last updated：2025-01-08

Calculate lunar eclipse dates and types for any year

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Written by the Elysia Tools team

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Key facts

Category
Astronomy
Input types
number, checkbox
Output type
text
Sample coverage
4
API ready
Yes

Overview

The Lunar Eclipse Calculator provides precise dates and classifications for lunar eclipses occurring between 1900 and 2100. Whether you are planning an observation or researching historical astronomical events, this tool delivers accurate data for any selected year.

When to use

  • When planning stargazing trips or photography sessions for specific lunar events.
  • When researching the frequency and types of lunar eclipses over a multi-year period.
  • When verifying the dates of historical or future celestial occurrences.

How it works

  1. 1Enter the target year between 1900 and 2100 into the input field.
  2. 2Toggle the 'Show Next Eclipse' option if you want to identify the immediate upcoming event.
  3. 3Click the calculate button to generate a list of eclipse dates and their specific types for that year.

Use cases

  • Astronomy enthusiasts planning their observation schedule for the upcoming year.
  • Educators creating lesson plans about lunar cycles and celestial mechanics.
  • Photographers tracking 'blood moon' events to prepare equipment and travel.

Examples

1. Planning Annual Observations

Amateur Astronomer

Background

An amateur astronomer wants to organize their observation calendar for the year 2026.

Problem

Needs to identify all lunar eclipse dates to avoid scheduling conflicts.

How to use

Set the year to 2026 and run the calculation.

year: 2026, showNext: false

Outcome

A complete list of all lunar eclipses occurring in 2026, including their specific types.

2. Tracking the Next Event

Stargazing Hobbyist

Background

A hobbyist wants to know when the next lunar eclipse will occur to prepare their telescope.

Problem

Does not want to manually search through a calendar for the next event.

How to use

Enable the 'Show Next Eclipse' checkbox and run the tool.

showNext: true

Outcome

FAQ

What range of years does this calculator support?

The calculator supports any year from 1900 to 2100.

Does it distinguish between total and partial eclipses?

Yes, the output specifies the type of lunar eclipse for each date provided.

Can I find out when the next lunar eclipse happens?

Yes, by enabling the 'Show Next Eclipse' option, the tool will display the date of the next upcoming event.

Is the data accurate for all locations?

The dates provided are based on universal astronomical calculations; visibility depends on your specific geographic location.

Does the tool require an internet connection?

Yes, the calculator processes requests through our server to ensure the most accurate astronomical data.

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The tool displays the date and type of the very next lunar eclipse relative to the current date.