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Location: Pittsburgh, Pennsylvania, United States

The following ISS sightings are possible from Friday Sep 29, 2023 through Saturday Oct 14, 2023

Date Visible Max Height Appears Disappears Share Event
Fri Sep 29, 9:06 PM 2 min 39° 10° above NW 39° above NW  
Sat Sep 30, 8:18 PM 4 min 49° 10° above NW 35° above E  
Sun Oct 1, 7:30 PM 6 min 32° 10° above NW 10° above E  
Sun Oct 1, 9:07 PM 3 min 30° 10° above WNW 30° above WSW  
Mon Oct 2, 8:18 PM 5 min 58° 10° above WNW 28° above SSE  
Tue Oct 3, 7:30 PM 7 min 79° 10° above NW 10° above ESE  
Tue Oct 3, 9:09 PM 2 min 11° 10° above WSW 11° above SW  
Wed Oct 4, 8:19 PM 5 min 20° 10° above W 10° above S  
Thu Oct 5, 7:31 PM 6 min 34° 10° above WNW 10° above SSE  
Sat Oct 7, 7:32 PM 3 min 12° 10° above WSW 10° above SSW  
{ts '2023-09-30 01:06:00'},Fri Sep 29, 9:06 PM,2 min,39°,10° above NW,39° above NW|{ts '2023-10-01 00:18:00'},Sat Sep 30, 8:18 PM,4 min,49°,10° above NW,35° above E|{ts '2023-10-01 23:30:00'},Sun Oct 1, 7:30 PM,6 min,32°,10° above NW,10° above E|{ts '2023-10-02 01:07:00'},Sun Oct 1, 9:07 PM,3 min,30°,10° above WNW,30° above WSW|{ts '2023-10-03 00:18:00'},Mon Oct 2, 8:18 PM,5 min,58°,10° above WNW,28° above SSE|{ts '2023-10-03 23:30:00'},Tue Oct 3, 7:30 PM,7 min,79°,10° above NW,10° above ESE|{ts '2023-10-04 01:09:00'},Tue Oct 3, 9:09 PM,2 min,11°,10° above WSW,11° above SW|{ts '2023-10-05 00:19:00'},Wed Oct 4, 8:19 PM,5 min,20°,10° above W,10° above S|{ts '2023-10-05 23:31:00'},Thu Oct 5, 7:31 PM,6 min,34°,10° above WNW,10° above SSE|{ts '2023-10-07 23:32:00'},Sat Oct 7, 7:32 PM,3 min,12°,10° above WSW,10° above SSW|

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 chart. Click the link for a detailed description of the astronomical horizon and sighting alert messages.