Circumstance Page 

Circumstance Page

The circumstance page in the app details the eclipse circumstance, details, timings and countdowns to events that occur during the clipse.

Universal Solar Eclipse Search Box

Indicates the currently selected eclipse.  Touch the universal search box to search solar eclipses from 1900 to 2100.  Touching the "eye" icon will display the next eclipse visible at the selected location.  Touching the "world" icon will display the next solar eclipse visible anywhere on Earth.

Solar Eclipse Search List

Touching the "Universal Solar Eclipse Search Box" will bring up a list of solar eclipses from 1900 to 2100.  You may narrow you eclipse search based upon eclipse type and whether visible at the currently selected location.  An "eye" icon displayed next to the eclipse will indicate that eclispe is visible from the currently selected location.

Location Toolbar Display

Indicates the GPS or manually derived location. A latitude and longitude will be displayed if a location has been selected on the map or the GPS is in use.  A location name, such as "Cleveland, OH" will be displayed if a location was specifically selected from the location search function.

An elevation of the location will be displayed next to the location name or latitude longitude coordinates.  Feet are displayed in the US, meters in the rest of the world.  

Time in UTC is displayed, such as "01:21:54Z".  The "I" info icon will display app version information, help, and open source copyright information.  The info icon will be replaced when "time travel" mode is enabled.  Touch this "rewind" icon to return to the current time.

Eclipse Type at Location

Indicates the type will be visible from the selected location.  Either a Total Eclipse, Annular Eclipse, or Partial Eclipse will be displayed.


If a total or annular eclipse occurs at the selected location, depth indicates how relatively close to the centerline or edges of totality/annularity the selected location is. A depth number approaching 100% will indicate the position is on or nearly on the centerline of the eclipse, while a number approaching 0% indicates the position on or near the edge of the path of totality/annularity.

Eclipse Statistics


Indicates the relative area of the Sun that is covered during the mid/maximum point of the eclipse.  A number of 100% or greater means the entire Sun will be covered at some point during the solar eclipse.


A ratio of the Sun's diameter that will be covered by the Moon during the maximum/mid eclipse at the selected location.


If the location is inside the path of totatliy or annularity the distance indicates how far away the selected location is from the centeraline of the path of totality/annularity.  Otherwise the distance indicates how far away the location is from experiencing totality or annularity.

Eclipse Timings


Counting down the days:hours:seconds to the specified event during the eclipse.


Each phase of the eclipse at it's time and countdowns.  Times for each event are displayed in the selected location's timezone.


How long each event will last.  Durations are given for the length of day.  The total time the eclipse lasts. And how long annularity or totality will last in hours:minutes:seconds.

Red Event

If an event is highlighted in red, the event occurs either before or after sunset/sunrise and is NOT visible from the current location.  Sunrise and sunset times are always highlighted in red.

Time Travel

You may use the time travel function to see the location and movement of the Moon's shadow at different times during the eclipse.

To initiate time travel: Long press any eclipse event. The app will simulate a time change to 10 seconds prior to the selected event. The map page will display the shadow of the Moon at this time.  The simulation page will display the relative position of the Sun and Moon during this "simulated" time.

To undo "time travel" mode touch the "rewind" button on the location toolbar display.

NOTE: The Moon's shadow may not be in your specific area at that selected time, zoom out to find it.