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Location: Chicago, Illinois, United States

The following ISS sightings are possible from Wednesday Sep 19, 2018 through Thursday Oct 4, 2018

Date Visible Max Height Appears Disappears Share Event
Thu Sep 20, 7:43 PM < 1 min 12° 10° above SSE 12° above SE  
Fri Sep 21, 8:26 PM 3 min 49° 10° above SW 49° above S  
Sat Sep 22, 7:34 PM 5 min 29° 10° above SSW 15° above E  
Sat Sep 22, 9:11 PM 1 min 20° 12° above W 20° above W  
Sun Sep 23, 8:18 PM 4 min 60° 10° above WSW 35° above NNE  
Mon Sep 24, 7:27 PM 6 min 73° 10° above SW 11° above ENE  
Mon Sep 24, 9:05 PM < 1 min 20° 18° above NW 20° above NW  
Tue Sep 25, 8:14 PM 3 min 31° 25° above WNW 20° above NNE  
Wed Sep 26, 7:22 PM 4 min 48° 37° above WNW 10° above NE  
Wed Sep 26, 8:58 PM < 1 min 16° 14° above NW 16° above NNW  
Thu Sep 27, 8:06 PM 3 min 20° 17° above NW 13° above NNE  
Fri Sep 28, 7:15 PM 3 min 27° 25° above NW 11° above NE  
Fri Sep 28, 8:51 PM 1 min 14° 10° above NW 14° above NNW  
Sat Sep 29, 7:59 PM 3 min 16° 12° above NW 11° above NNE  
Sun Sep 30, 7:07 PM 4 min 18° 15° above NW 10° above NNE  
Sun Sep 30, 8:44 PM 1 min 14° 11° above NNW 14° above NNW  
Mon Oct 1, 7:52 PM 3 min 14° 10° above NW 11° above NNE  
Tue Oct 2, 7:00 PM 4 min 15° 10° above NW 11° above NNE  
Tue Oct 2, 8:37 PM 1 min 17° 10° above NNW 17° above N  
Wed Oct 3, 7:45 PM 3 min 16° 11° above NNW 14° above NNE  
2018-09-21 00:43:00.0,Thu Sep 20, 7:43 PM,< 1 min,12°,10° above SSE,12° above SE|2018-09-22 01:26:00.0,Fri Sep 21, 8:26 PM,3 min,49°,10° above SW,49° above S|2018-09-23 00:34:00.0,Sat Sep 22, 7:34 PM,5 min,29°,10° above SSW,15° above E|2018-09-23 02:11:00.0,Sat Sep 22, 9:11 PM,1 min,20°,12° above W,20° above W|2018-09-24 01:18:00.0,Sun Sep 23, 8:18 PM,4 min,60°,10° above WSW,35° above NNE|2018-09-25 00:27:00.0,Mon Sep 24, 7:27 PM,6 min,73°,10° above SW,11° above ENE|2018-09-25 02:05:00.0,Mon Sep 24, 9:05 PM,< 1 min,20°,18° above NW,20° above NW|2018-09-26 01:14:00.0,Tue Sep 25, 8:14 PM,3 min,31°,25° above WNW,20° above NNE|2018-09-27 00:22:00.0,Wed Sep 26, 7:22 PM,4 min,48°,37° above WNW,10° above NE|2018-09-27 01:58:00.0,Wed Sep 26, 8:58 PM,< 1 min,16°,14° above NW,16° above NNW|2018-09-28 01:06:00.0,Thu Sep 27, 8:06 PM,3 min,20°,17° above NW,13° above NNE|2018-09-29 00:15:00.0,Fri Sep 28, 7:15 PM,3 min,27°,25° above NW,11° above NE|2018-09-29 01:51:00.0,Fri Sep 28, 8:51 PM,1 min,14°,10° above NW,14° above NNW|2018-09-30 00:59:00.0,Sat Sep 29, 7:59 PM,3 min,16°,12° above NW,11° above NNE|2018-10-01 00:07:00.0,Sun Sep 30, 7:07 PM,4 min,18°,15° above NW,10° above NNE|2018-10-01 01:44:00.0,Sun Sep 30, 8:44 PM,1 min,14°,11° above NNW,14° above NNW|2018-10-02 00:52:00.0,Mon Oct 1, 7:52 PM,3 min,14°,10° above NW,11° above NNE|2018-10-03 00:00:00.0,Tue Oct 2, 7:00 PM,4 min,15°,10° above NW,11° above NNE|2018-10-03 01:37:00.0,Tue Oct 2, 8:37 PM,1 min,17°,10° above NNW,17° above N|2018-10-04 00:45:00.0,Wed Oct 3, 7:45 PM,3 min,16°,11° above NNW,14° above NNE|

Last Updated:

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