Solar Eclipse Calculator

The Solar Eclipse Calculator allows users to input specific observational details to determine key timing and visibility metrics of solar eclipses, such as contact times, duration, maximum obscuration, and the Sun’s position during the event.

Use Our Solar Eclipse Calculator

How to Use the Solar Eclipse Calculator

Step 1: Enter Observation Date

Begin using the Solar Eclipse Calculator by selecting your desired observation date. This date must be between January 1, 2024, and December 31, 2100. Ensure that it accurately reflects when and where you plan to observe the solar eclipse.

Step 2: Input Your Geographic Coordinates

  • Latitude: Enter the latitude of your location in decimal degrees. It should be within the range of -90 to 90. Enter the value with precision up to six decimal places.
  • Longitude: Enter the longitude of your location in decimal degrees, within the range of -180 to 180. Like the latitude, use precision up to six decimal places.

Step 3: Provide Altitude

Input the altitude of your observation location in meters. The valid range is from -500 meters (for below sea level locations) to 9000 meters. The altitude helps in determining the exact timings and visibility conditions of the eclipse events.

Step 4: Select Eclipse Type

Choose the type of solar eclipse you would like to observe from the following options:

  • Total Solar Eclipse
  • Partial Solar Eclipse
  • Annular Solar Eclipse

Make sure this selection is based on the type of eclipse visible from your location on the observation date.

Step 5: Calculate the Results

After filling in all the input fields, the calculator will deliver a variety of results, including:

  • First Contact (C1): Date and time when the eclipse begins.
  • Second Contact (C2): Date and time when total or annular eclipse begins.
  • Maximum Eclipse: Date and time when the eclipse is at its maximum point.
  • Third Contact (C3): Date and time when total or annular eclipse ends.
  • Fourth Contact (C4): Date and time when the eclipse ends.
  • Total Duration: Total duration of the eclipse in minutes.
  • Totality Duration: The duration of totality in the eclipse, if applicable.
  • Maximum Obscuration: The maximum percentage of the sun obscured by the moon.
  • Sun Altitude at Maximum: The altitude of the sun at the time of maximum eclipse.
  • Sun Azimuth at Maximum: The direction of the sun relative to true north at the time of maximum eclipse.

Follow these steps to successfully use the Solar Eclipse Calculator. Ensure each input is accurate for precise results. Have a phenomenal observation!