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Location: Johnson Space Center, Texas, United States

The following ISS sightings are possible from Thursday Jul 12, 2018 through Friday Jul 27, 2018

Date Visible Max Height Appears Disappears Share Event
Tue Jul 17, 5:41 AM < 1 min 11° 10° above NNE 11° above NNE  
Wed Jul 18, 9:24 PM 5 min 33° 12° above SSW 11° above ENE  
Wed Jul 18, 11:01 PM 4 min 15° 11° above WNW 11° above N  
Thu Jul 19, 5:33 AM 5 min 27° 11° above NNW 10° above E  
Thu Jul 19, 10:08 PM 5 min 29° 11° above WSW 11° above NNE  
Fri Jul 20, 4:41 AM 1 min 13° 10° above N 13° above NNE  
Fri Jul 20, 9:15 PM 6 min 68° 10° above SW 10° above NE  
Sat Jul 21, 5:24 AM 6 min 85° 11° above NW 10° above SE  
Sat Jul 21, 10:04 PM < 1 min 11° 11° above NNW 10° above N  
Sun Jul 22, 4:32 AM 6 min 35° 10° above NNW 10° above ESE  
Sun Jul 22, 6:10 AM 3 min 12° 10° above WSW 10° above SSW  
Sun Jul 22, 9:11 PM 2 min 22° 22° above NNW 10° above NNE  
Mon Jul 23, 5:21 AM 1 min 17° 17° above S 10° above S  
2018-07-17 10:41:00.0,Tue Jul 17, 5:41 AM,< 1 min,11°,10° above NNE,11° above NNE|2018-07-19 02:24:00.0,Wed Jul 18, 9:24 PM,5 min,33°,12° above SSW,11° above ENE|2018-07-19 04:01:00.0,Wed Jul 18, 11:01 PM,4 min,15°,11° above WNW,11° above N|2018-07-19 10:33:00.0,Thu Jul 19, 5:33 AM,5 min,27°,11° above NNW,10° above E|2018-07-20 03:08:00.0,Thu Jul 19, 10:08 PM,5 min,29°,11° above WSW,11° above NNE|2018-07-20 09:41:00.0,Fri Jul 20, 4:41 AM,1 min,13°,10° above N,13° above NNE|2018-07-21 02:15:00.0,Fri Jul 20, 9:15 PM,6 min,68°,10° above SW,10° above NE|2018-07-21 10:24:00.0,Sat Jul 21, 5:24 AM,6 min,85°,11° above NW,10° above SE|2018-07-22 03:04:00.0,Sat Jul 21, 10:04 PM,< 1 min,11°,11° above NNW,10° above N|2018-07-22 09:32:00.0,Sun Jul 22, 4:32 AM,6 min,35°,10° above NNW,10° above ESE|2018-07-22 11:10:00.0,Sun Jul 22, 6:10 AM,3 min,12°,10° above WSW,10° above SSW|2018-07-23 02:11:00.0,Sun Jul 22, 9:11 PM,2 min,22°,22° above NNW,10° above NNE|2018-07-23 10:21:00.0,Mon Jul 23, 5:21 AM,1 min,17°,17° above S,10° above S|

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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