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Sighting Location

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Location: Acton, Massachusetts, United States

The following ISS sightings are possible from Monday Jun 24, 2019 through Wednesday Jul 10, 2019

Date Visible Max Height Appears Disappears Share Event
Thu Jun 27, 4:32 AM 1 min 10° 10° above SE 10° above ESE  
Sat Jun 29, 4:27 AM 4 min 26° 11° above SSW 16° above E  
Sun Jun 30, 3:38 AM 4 min 15° 11° above SSE 10° above E  
Mon Jul 1, 4:24 AM 4 min 72° 10° above SW 37° above ENE  
Tue Jul 2, 3:36 AM 3 min 39° 26° above S 18° above ENE  
Wed Jul 3, 2:48 AM 2 min 22° 22° above SE 10° above E  
Wed Jul 3, 4:21 AM 4 min 46° 10° above WSW 31° above NNE  
Thu Jul 4, 3:34 AM 3 min 76° 28° above WSW 31° above NE  
Fri Jul 5, 2:46 AM 3 min 60° 60° above SE 13° above ENE  
Fri Jul 5, 4:20 AM 4 min 25° 11° above WNW 21° above NNE  
Sat Jul 6, 1:59 AM 1 min 19° 19° above E 11° above ENE  
Sat Jul 6, 3:31 AM 3 min 34° 16° above W 29° above N  
Sun Jul 7, 2:44 AM 2 min 52° 51° above NW 28° above NE  
Sun Jul 7, 4:19 AM 3 min 18° 10° above WNW 17° above N  
Mon Jul 8, 1:56 AM 2 min 32° 32° above NE 11° above NE  
Mon Jul 8, 3:29 AM 3 min 21° 10° above WNW 20° above N  
Tue Jul 9, 1:09 AM < 1 min 12° 12° above ENE 10° above ENE  
Tue Jul 9, 2:41 AM 2 min 27° 20° above WNW 23° above N  
Tue Jul 9, 4:18 AM 2 min 16° 11° above NW 16° above N  
2019-06-27 08:32:00.0,Thu Jun 27, 4:32 AM,1 min,10°,10° above SE,10° above ESE|2019-06-29 08:27:00.0,Sat Jun 29, 4:27 AM,4 min,26°,11° above SSW,16° above E|2019-06-30 07:38:00.0,Sun Jun 30, 3:38 AM,4 min,15°,11° above SSE,10° above E|2019-07-01 08:24:00.0,Mon Jul 1, 4:24 AM,4 min,72°,10° above SW,37° above ENE|2019-07-02 07:36:00.0,Tue Jul 2, 3:36 AM,3 min,39°,26° above S,18° above ENE|2019-07-03 06:48:00.0,Wed Jul 3, 2:48 AM,2 min,22°,22° above SE,10° above E|2019-07-03 08:21:00.0,Wed Jul 3, 4:21 AM,4 min,46°,10° above WSW,31° above NNE|2019-07-04 07:34:00.0,Thu Jul 4, 3:34 AM,3 min,76°,28° above WSW,31° above NE|2019-07-05 06:46:00.0,Fri Jul 5, 2:46 AM,3 min,60°,60° above SE,13° above ENE|2019-07-05 08:20:00.0,Fri Jul 5, 4:20 AM,4 min,25°,11° above WNW,21° above NNE|2019-07-06 05:59:00.0,Sat Jul 6, 1:59 AM,1 min,19°,19° above E,11° above ENE|2019-07-06 07:31:00.0,Sat Jul 6, 3:31 AM,3 min,34°,16° above W,29° above N|2019-07-07 06:44:00.0,Sun Jul 7, 2:44 AM,2 min,52°,51° above NW,28° above NE|2019-07-07 08:19:00.0,Sun Jul 7, 4:19 AM,3 min,18°,10° above WNW,17° above N|2019-07-08 05:56:00.0,Mon Jul 8, 1:56 AM,2 min,32°,32° above NE,11° above NE|2019-07-08 07:29:00.0,Mon Jul 8, 3:29 AM,3 min,21°,10° above WNW,20° above N|2019-07-09 05:09:00.0,Tue Jul 9, 1:09 AM,< 1 min,12°,12° above ENE,10° above ENE|2019-07-09 06:41:00.0,Tue Jul 9, 2:41 AM,2 min,27°,20° above WNW,23° above N|2019-07-09 08:18:00.0,Tue Jul 9, 4:18 AM,2 min,16°,11° above NW,16° above N|

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