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Location: Pierre, South Dakota, United States

The following ISS sightings are possible from Wednesday Feb 21, 2018 through Thursday Mar 8, 2018

Date Visible Max Height Appears Disappears Share Event
Sun Feb 25, 6:24 AM 1 min 12° 10° above SSE 12° above SE  
Tue Feb 27, 6:15 AM 3 min 28° 10° above SSW 26° above ESE  
Wed Feb 28, 5:24 AM 2 min 16° 13° above SSE 14° above ESE  
Thu Mar 1, 6:07 AM 3 min 63° 19° above SW 34° above ENE  
Fri Mar 2, 5:17 AM 1 min 34° 34° above SE 22° above E  
Fri Mar 2, 6:50 AM 4 min 40° 10° above W 36° above N  
Sat Mar 3, 4:27 AM < 1 min 11° 11° above E 11° above E  
Sat Mar 3, 6:00 AM 4 min 62° 33° above W 16° above NE  
Sun Mar 4, 5:10 AM 1 min 47° 47° above ENE 24° above ENE  
Sun Mar 4, 6:43 AM 5 min 27° 11° above WNW 11° above NE  
Mon Mar 5, 5:52 AM 4 min 35° 27° above WNW 13° above NE  
Tue Mar 6, 5:02 AM 1 min 32° 32° above NNE 15° above NE  
Tue Mar 6, 6:35 AM 5 min 22° 11° above WNW 11° above NE  
Wed Mar 7, 5:44 AM 3 min 25° 22° above NW 12° above NE  
Thu Mar 8, 4:54 AM 1 min 23° 23° above NNE 14° above NE  
Thu Mar 8, 6:27 AM 4 min 22° 10° above NW 14° above NE  
2018-02-25 12:24:00.0,Sun Feb 25, 6:24 AM,1 min,12°,10° above SSE,12° above SE|2018-02-27 12:15:00.0,Tue Feb 27, 6:15 AM,3 min,28°,10° above SSW,26° above ESE|2018-02-28 11:24:00.0,Wed Feb 28, 5:24 AM,2 min,16°,13° above SSE,14° above ESE|2018-03-01 12:07:00.0,Thu Mar 1, 6:07 AM,3 min,63°,19° above SW,34° above ENE|2018-03-02 11:17:00.0,Fri Mar 2, 5:17 AM,1 min,34°,34° above SE,22° above E|2018-03-02 12:50:00.0,Fri Mar 2, 6:50 AM,4 min,40°,10° above W,36° above N|2018-03-03 10:27:00.0,Sat Mar 3, 4:27 AM,< 1 min,11°,11° above E,11° above E|2018-03-03 12:00:00.0,Sat Mar 3, 6:00 AM,4 min,62°,33° above W,16° above NE|2018-03-04 11:10:00.0,Sun Mar 4, 5:10 AM,1 min,47°,47° above ENE,24° above ENE|2018-03-04 12:43:00.0,Sun Mar 4, 6:43 AM,5 min,27°,11° above WNW,11° above NE|2018-03-05 11:52:00.0,Mon Mar 5, 5:52 AM,4 min,35°,27° above WNW,13° above NE|2018-03-06 11:02:00.0,Tue Mar 6, 5:02 AM,1 min,32°,32° above NNE,15° above NE|2018-03-06 12:35:00.0,Tue Mar 6, 6:35 AM,5 min,22°,11° above WNW,11° above NE|2018-03-07 11:44:00.0,Wed Mar 7, 5:44 AM,3 min,25°,22° above NW,12° above NE|2018-03-08 10:54:00.0,Thu Mar 8, 4:54 AM,1 min,23°,23° above NNE,14° above NE|2018-03-08 12:27:00.0,Thu Mar 8, 6:27 AM,4 min,22°,10° above NW,14° above NE|

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The space station looks like an airplane or a very bright star moving across the sky, except it doesn’t have flashing lights or change direction. It will also be moving considerably faster than a typical airplane (airplanes generally fly at about 600 miles per hour; the space station flies at 17,500 miles per hour).

Below is a time-lapse photo of the space station moving across the sky.

The International Space Station is seen in this 30 second exposure as it flies over Elkton, VA early in the morning, Saturday, August 1, 2015. Photo Credit: NASA/Bill Ingalls The International Space Station is seen in this 30 second exposure as it flies over Elkton, VA early in the morning, Saturday, August 1, 2015. Photo Credit: NASA/Bill Ingalls

Visit the NASA Johnson Flickr Photostream

How do I Spot The Station?

What does all this sighting information mean?

Time is when the sighting opportunity will begin in your local time zone. All sightings will occur within a few hours before or after sunrise or sunset. This is the optimum viewing period as the sun reflects off the space station and contrasts against the darker sky.

Visible is the maximum time period the space station is visible before crossing back below the horizon.

Max Height is measured in degrees (also known as elevation). It represents the height of the space station from the horizon in the night sky. The horizon is at zero degrees, and directly overhead is ninety degrees. If you hold your fist at arm’s length and place your fist resting on the horizon, the top will be about 10 degrees.

Appears is the location in the sky where the station will be visible first. This value, like maximum height, also is measured in degrees from the horizon. The letters represent compass directions -- N is north, WNW is west by northwest, and so on.

Disappears represents where in the night sky the International Space Station will leave your field of view.

Astronomical Horizon