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Location: Acton, Massachusetts, United States

The following ISS sightings are possible from Monday Oct 14, 2019 through Monday Nov 4, 2019

Date Visible Max Height Appears Disappears Share Event
Wed Oct 23, 6:13 AM 2 min 20° 10° above S 20° above SE  
Thu Oct 24, 5:26 AM 1 min 12° 10° above SSE 12° above SE  
Fri Oct 25, 6:12 AM 4 min 55° 10° above SW 34° above E  
Sat Oct 26, 5:25 AM 2 min 31° 23° above S 25° above ESE  
Sun Oct 27, 4:39 AM < 1 min 16° 16° above ESE 13° above E  
Sun Oct 27, 6:12 AM 5 min 56° 18° above WSW 11° above NE  
Mon Oct 28, 5:26 AM 3 min 87° 87° above ESE 12° above ENE  
Tue Oct 29, 4:40 AM < 1 min 15° 15° above ENE 15° above ENE  
Tue Oct 29, 6:13 AM 4 min 28° 21° above WNW 10° above NE  

The following CYGNUS sightings are possible from Monday Oct 14, 2019 through Monday Nov 4, 2019

Date Visible Max Height Appears Disappears Share Event
Sun Nov 3, 4:27 AM 2 min 16° 16° above N 10° above NE  
Mon Nov 4, 5:12 AM 4 min 18° 13° above NNW 10° above NE  
2019-10-23 10:13:00.0,Wed Oct 23, 6:13 AM,2 min,20°,10° above S,20° above SE|2019-10-24 09:26:00.0,Thu Oct 24, 5:26 AM,1 min,12°,10° above SSE,12° above SE|2019-10-25 10:12:00.0,Fri Oct 25, 6:12 AM,4 min,55°,10° above SW,34° above E|2019-10-26 09:25:00.0,Sat Oct 26, 5:25 AM,2 min,31°,23° above S,25° above ESE|2019-10-27 08:39:00.0,Sun Oct 27, 4:39 AM,< 1 min,16°,16° above ESE,13° above E|2019-10-27 10:12:00.0,Sun Oct 27, 6:12 AM,5 min,56°,18° above WSW,11° above NE|2019-10-28 09:26:00.0,Mon Oct 28, 5:26 AM,3 min,87°,87° above ESE,12° above ENE|2019-10-29 08:40:00.0,Tue Oct 29, 4:40 AM,< 1 min,15°,15° above ENE,15° above ENE|2019-10-29 10:13:00.0,Tue Oct 29, 6:13 AM,4 min,28°,21° above WNW,10° above NE|

What am I looking for in the sky?

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

National Aeronautics and Space Administration Page Editor: Bill Keeter NASA Official: Jacob Keaton