ISS Visibility

ISS Visibility displays 10 to 30 day predictions for when the International Space Station may be visible for your location. It can display a chart of the whole sky, or a more detailed chart showing the path of the space station across the sky. Unlike most other satellites, the International Space Station is bright enough to be seen even under bright city lights. It's very easy to spot once you know where to look for it. FEATURES - Use location services to get your current location, or enter the location manually - Define and save multiple location co-ordinates. Saves satellite passes and charts on the device for use offline. - Dark colour scheme to help maintain your night vision. - Whole sky chart. - Detailed sky chart. - Ground Plot chart. When refreshing passes for a location. If a wifi connection is detected, all the charts for the passes will be downloaded and saved automatically. When a cellular data connection is detected, the charts will not be downloaded automatically. Instead, as the charts are viewed manually, they are downloaded and saved. NOTE: There will be times when the ISS will not be visible from your location in the next ten days. This is usually followed by a period when it's visible for consecutive days, and often twice in the one day. [ Buy Now ] http://click.linksynergy.com/fs-bin/stat?id=dfVR5X3B/6c&offerid=146261&type=3&subid=0&tmpid=1826&RD_PARM1=http%253A%252F%252Fitunes.apple.com%252Fus%252Fapp%252Fiss-visibility%252Fid314583174%253Fmt%253D8%2526uo%253D6%2526partnerId%253D30shapeimage_2_link_0

Use the devices built-in location services to get your location. An accuracy of 10km or less is fine. The location can also be entered manually if required.

Refresh the passes using the refresh button in the top left corner.


Select a pass from the list to get more details of the pass.

The pass details show where and when the ISS will be visible.

The whole sky and detailed charts show the track of the ISS across the sky.

  1. -Satellites do not give off any light of their own. The light that you see is sunlight that is reflected by the satellite. For a satellite to be visible from the Earth, it must be lit by the sun, and must be bright enough to be seen against the sky glow. For this reason, satellite passes are only visible before sunrise, and after sunset. During this time the sky is dark enough for the satellite to stand out against background sky. Later at night, satellites are in the shadow of the Earth, and won’t be visible. Also, light pollution can make the sky brighter, and the satellites harder to see.


  1. -The magnitude (Mag) represents the brightness of the ISS. The lower the number, the brighter it will appear. The scale is logarithmic, so when the magnitude increases by 1, the object will be approximately 1.4 times brighter.


  1. -The bar graph represents the magnitude of the pass. 1 Bar represents magnitude 1.5. Each increment represents a 0.5 increase in magnitude, up to 10 bars which represents magnitude -3.0 and brighter.


  1. -The Altitude, also known as elevation, is the angle of the ISS above the horizon. Zero degrees being on the horizon, and 90 degrees directly overhead.


  1. -The Azimuth is a compass bearing.


  1. -The Max details of a pass is when the ISS is at it’s highest point in the sky.


  1. -The whole sky chart is made to be held above your head. The direction of east and west is the reverse of what you would expect when reading a map.


  1. -All the pass dates and times are shown using the timezone of the device. To see the correct date and time for a pass in a different timezone, change the timezone of the device.


The pass data and charts used by ISS Visibility are supplied by the heavens-above.com website, and is used with their permission. A connection to the internet is required to download passes and charts.

We welcome any and all feedback. Please contact us with any questions, suggestions, comments, or bugs at support@psychicpsquirrel.com.

The Ground Plot Chart shows the path of the ISS relative to your location.

Define multiple locations.