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Location: Phoenix, Arizona, 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
Wed Jul 18, 4:21 AM 2 min 18° 10° above NNW 18° above NNE  
Wed Jul 18, 8:58 PM 6 min 46° 10° above SSW 11° above ENE  
Wed Jul 18, 10:36 PM 4 min 15° 11° above WNW 11° above N  
Thu Jul 19, 3:30 AM < 1 min 11° 10° above N 11° above NNE  
Thu Jul 19, 5:05 AM 5 min 80° 10° above NW 19° above SE  
Thu Jul 19, 8:07 PM 5 min 21° 11° above S 10° above E  
Thu Jul 19, 9:43 PM 5 min 26° 11° above W 10° above NNE  
Fri Jul 20, 4:13 AM 6 min 44° 11° above NNW 11° above ESE  
Fri Jul 20, 8:50 PM 6 min 54° 10° above WSW 10° above NE  
Sat Jul 21, 3:21 AM 5 min 23° 11° above NNW 11° above E  
Sat Jul 21, 4:58 AM 5 min 25° 11° above WNW 11° above S  
Sat Jul 21, 7:58 PM 6 min 64° 11° above SW 11° above NE  
Sat Jul 21, 9:39 PM < 1 min 11° 11° above N 11° above N  
Sun Jul 22, 2:30 AM 3 min 14° 10° above N 11° above ENE  
Sun Jul 22, 4:05 AM 6 min 58° 10° above NW 10° above SSE  
Sun Jul 22, 8:46 PM 2 min 20° 20° above NNW 10° above NNE  
Mon Jul 23, 7:55 PM 1 min 19° 19° above NNE 11° above NNE  
Tue Jul 24, 8:39 PM < 1 min 10° 10° above NNW 10° above NNW  
2018-07-18 11:21:00.0,Wed Jul 18, 4:21 AM,2 min,18°,10° above NNW,18° above NNE|2018-07-19 03:58:00.0,Wed Jul 18, 8:58 PM,6 min,46°,10° above SSW,11° above ENE|2018-07-19 05:36:00.0,Wed Jul 18, 10:36 PM,4 min,15°,11° above WNW,11° above N|2018-07-19 10:30:00.0,Thu Jul 19, 3:30 AM,< 1 min,11°,10° above N,11° above NNE|2018-07-19 12:05:00.0,Thu Jul 19, 5:05 AM,5 min,80°,10° above NW,19° above SE|2018-07-20 03:07:00.0,Thu Jul 19, 8:07 PM,5 min,21°,11° above S,10° above E|2018-07-20 04:43:00.0,Thu Jul 19, 9:43 PM,5 min,26°,11° above W,10° above NNE|2018-07-20 11:13:00.0,Fri Jul 20, 4:13 AM,6 min,44°,11° above NNW,11° above ESE|2018-07-21 03:50:00.0,Fri Jul 20, 8:50 PM,6 min,54°,10° above WSW,10° above NE|2018-07-21 10:21:00.0,Sat Jul 21, 3:21 AM,5 min,23°,11° above NNW,11° above E|2018-07-21 11:58:00.0,Sat Jul 21, 4:58 AM,5 min,25°,11° above WNW,11° above S|2018-07-22 02:58:00.0,Sat Jul 21, 7:58 PM,6 min,64°,11° above SW,11° above NE|2018-07-22 04:39:00.0,Sat Jul 21, 9:39 PM,< 1 min,11°,11° above N,11° above N|2018-07-22 09:30:00.0,Sun Jul 22, 2:30 AM,3 min,14°,10° above N,11° above ENE|2018-07-22 11:05:00.0,Sun Jul 22, 4:05 AM,6 min,58°,10° above NW,10° above SSE|2018-07-23 03:46:00.0,Sun Jul 22, 8:46 PM,2 min,20°,20° above NNW,10° above NNE|2018-07-24 02:55:00.0,Mon Jul 23, 7:55 PM,1 min,19°,19° above NNE,11° above NNE|2018-07-25 03:39:00.0,Tue Jul 24, 8:39 PM,< 1 min,10°,10° above NNW,10° above NNW|

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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