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Location: Portsmouth, England, United Kingdom

The following ISS sightings are possible from Wednesday Mar 14, 2018 through Friday Mar 30, 2018

Date Visible Max Height Appears Disappears Share Event
Thu Mar 15, 3:30 AM 1 min 20° 20° above E 11° above E  
Thu Mar 15, 5:02 AM 5 min 48° 26° above W 10° above SE  
Fri Mar 16, 4:12 AM 3 min 58° 58° above SSE 11° above ESE  
Fri Mar 16, 5:45 AM 5 min 18° 10° above W 10° above S  
Sat Mar 17, 3:22 AM < 1 min 14° 14° above ESE 11° above ESE  
Sat Mar 17, 4:55 AM 4 min 28° 24° above WSW 10° above SSE  
Sun Mar 18, 4:05 AM 1 min 24° 24° above SSE 11° above SE  
Mon Mar 19, 4:48 AM 1 min 15° 15° above SSW 11° above S  
Sat Mar 24, 8:19 PM < 1 min 14° 10° above SSW 14° above SSW  
Sun Mar 25, 8:28 PM 2 min 16° 10° above S 16° above SE  
Sun Mar 25, 10:03 PM < 1 min 12° 10° above WSW 12° above WSW  
Mon Mar 26, 9:11 PM 3 min 43° 10° above SW 43° above SSE  
Tue Mar 27, 8:19 PM 5 min 29° 10° above SSW 13° above E  
Tue Mar 27, 9:55 PM 2 min 35° 10° above WSW 35° above WSW  
Wed Mar 28, 9:02 PM 4 min 70° 10° above WSW 37° above E  
Wed Mar 28, 10:39 PM < 1 min 15° 10° above W 15° above W  
2018-03-15 03:30:00.0,Thu Mar 15, 3:30 AM,1 min,20°,20° above E,11° above E|2018-03-15 05:02:00.0,Thu Mar 15, 5:02 AM,5 min,48°,26° above W,10° above SE|2018-03-16 04:12:00.0,Fri Mar 16, 4:12 AM,3 min,58°,58° above SSE,11° above ESE|2018-03-16 05:45:00.0,Fri Mar 16, 5:45 AM,5 min,18°,10° above W,10° above S|2018-03-17 03:22:00.0,Sat Mar 17, 3:22 AM,< 1 min,14°,14° above ESE,11° above ESE|2018-03-17 04:55:00.0,Sat Mar 17, 4:55 AM,4 min,28°,24° above WSW,10° above SSE|2018-03-18 04:05:00.0,Sun Mar 18, 4:05 AM,1 min,24°,24° above SSE,11° above SE|2018-03-19 04:48:00.0,Mon Mar 19, 4:48 AM,1 min,15°,15° above SSW,11° above S|2018-03-24 20:19:00.0,Sat Mar 24, 8:19 PM,< 1 min,14°,10° above SSW,14° above SSW|2018-03-25 19:28:00.0,Sun Mar 25, 8:28 PM,2 min,16°,10° above S,16° above SE|2018-03-25 21:03:00.0,Sun Mar 25, 10:03 PM,< 1 min,12°,10° above WSW,12° above WSW|2018-03-26 20:11:00.0,Mon Mar 26, 9:11 PM,3 min,43°,10° above SW,43° above SSE|2018-03-27 19:19:00.0,Tue Mar 27, 8:19 PM,5 min,29°,10° above SSW,13° above E|2018-03-27 20:55:00.0,Tue Mar 27, 9:55 PM,2 min,35°,10° above WSW,35° above WSW|2018-03-28 20:02:00.0,Wed Mar 28, 9:02 PM,4 min,70°,10° above WSW,37° above E|2018-03-28 21:39:00.0,Wed Mar 28, 10:39 PM,< 1 min,15°,10° above W,15° above W|

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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