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Location: Dover, Delaware, 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, 8:43 PM 2 min 28° 10° above SW 28° above SSW  
Fri Sep 21, 7:51 PM 4 min 25° 11° above S 18° above E  
Fri Sep 21, 9:28 PM < 1 min 16° 11° above W 16° above W  
Sat Sep 22, 8:35 PM 4 min 58° 10° above WSW 42° above NNE  
Sun Sep 23, 7:43 PM 6 min 70° 10° above SW 10° above NE  
Sun Sep 23, 9:22 PM < 1 min 17° 16° above NW 17° above NW  
Mon Sep 24, 8:31 PM 2 min 27° 25° above NW 17° above NNE  
Tue Sep 25, 7:39 PM 4 min 45° 35° above WNW 10° above NE  
Tue Sep 25, 9:15 PM 1 min 12° 10° above NW 12° above NNW  
Wed Sep 26, 8:24 PM 3 min 16° 15° above NW 10° above NNE  
Thu Sep 27, 7:32 PM 3 min 23° 22° above NW 11° above NNE  
Fri Sep 28, 8:16 PM 2 min 11° 10° above NW 10° above N  
Sat Sep 29, 7:24 PM 3 min 14° 12° above NW 10° above NNE  
Mon Oct 1, 7:18 PM 2 min 10° 10° above NNW 10° above N  
Wed Oct 3, 8:48 PM < 1 min 12° 10° above NNW 12° above N  
2018-09-21 00:43:00.0,Thu Sep 20, 8:43 PM,2 min,28°,10° above SW,28° above SSW|2018-09-21 23:51:00.0,Fri Sep 21, 7:51 PM,4 min,25°,11° above S,18° above E|2018-09-22 01:28:00.0,Fri Sep 21, 9:28 PM,< 1 min,16°,11° above W,16° above W|2018-09-23 00:35:00.0,Sat Sep 22, 8:35 PM,4 min,58°,10° above WSW,42° above NNE|2018-09-23 23:43:00.0,Sun Sep 23, 7:43 PM,6 min,70°,10° above SW,10° above NE|2018-09-24 01:22:00.0,Sun Sep 23, 9:22 PM,< 1 min,17°,16° above NW,17° above NW|2018-09-25 00:31:00.0,Mon Sep 24, 8:31 PM,2 min,27°,25° above NW,17° above NNE|2018-09-25 23:39:00.0,Tue Sep 25, 7:39 PM,4 min,45°,35° above WNW,10° above NE|2018-09-26 01:15:00.0,Tue Sep 25, 9:15 PM,1 min,12°,10° above NW,12° above NNW|2018-09-27 00:24:00.0,Wed Sep 26, 8:24 PM,3 min,16°,15° above NW,10° above NNE|2018-09-27 23:32:00.0,Thu Sep 27, 7:32 PM,3 min,23°,22° above NW,11° above NNE|2018-09-29 00:16:00.0,Fri Sep 28, 8:16 PM,2 min,11°,10° above NW,10° above N|2018-09-29 23:24:00.0,Sat Sep 29, 7:24 PM,3 min,14°,12° above NW,10° above NNE|2018-10-01 23:18:00.0,Mon Oct 1, 7:18 PM,2 min,10°,10° above NNW,10° above N|2018-10-04 00:48:00.0,Wed Oct 3, 8:48 PM,< 1 min,12°,10° above NNW,12° above N|

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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