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Location: Philadelphia, Pennsylvania, United States

The following ISS sightings are possible from Wednesday May 23, 2018 through Thursday Jun 7, 2018

Date Visible Max Height Appears Disappears Share Event
Wed May 23, 8:42 PM 6 min 71° 10° above SW 10° above ENE  
Wed May 23, 10:23 PM 2 min 19° 19° above NNW 10° above NNE  
Thu May 24, 00:00 AM < 1 min 10° 10° above N 10° above N  
Thu May 24, 1:35 AM 2 min 16° 10° above NNW 16° above NNE  
Thu May 24, 9:30 PM 3 min 28° 28° above NNW 11° above NNE  
Thu May 24, 11:08 PM < 1 min 11° 11° above N 10° above NNE  
Fri May 25, 00:45 AM < 1 min 13° 13° above NNE 12° above NNE  
Fri May 25, 10:15 PM 1 min 13° 13° above N 10° above NNE  
Fri May 25, 11:53 PM < 1 min 11° 11° above N 10° above NNE  
Sat May 26, 1:27 AM < 1 min 12° 10° above NNW 12° above NNW  
Sat May 26, 9:23 PM 2 min 17° 17° above N 11° above NNE  
Sat May 26, 11:00 PM < 1 min 10° 10° above N 10° above NNE  
Sun May 27, 00:36 AM < 1 min 16° 16° above N 16° above N  
Sun May 27, 10:08 PM < 1 min 11° 11° above N 10° above N  
Sun May 27, 11:45 PM 1 min 14° 14° above N 13° above NNE  
Mon May 28, 9:15 PM 1 min 12° 12° above N 10° above NNE  
Mon May 28, 10:52 PM 2 min 11° 11° above N 10° above NNE  
Tue May 29, 00:27 AM 1 min 17° 10° above NW 17° above NNW  
Tue May 29, 9:59 PM 1 min 10° 10° above N 10° above NNE  
Tue May 29, 11:36 PM < 1 min 20° 18° above N 20° above NNE  
Wed May 30, 9:07 PM 1 min 10° 10° above N 10° above NNE  
Wed May 30, 10:44 PM 2 min 15° 14° above N 12° above NE  
Thu May 31, 00:19 AM < 1 min 13° 10° above NW 13° above NW  
Thu May 31, 9:51 PM 2 min 12° 11° above N 10° above NE  
Thu May 31, 11:28 PM < 1 min 28° 21° above NNW 28° above N  
Fri Jun 1, 8:59 PM 2 min 11° 10° above N 10° above NNE  
Fri Jun 1, 10:36 PM 2 min 23° 19° above N 21° above NE  
Sat Jun 2, 00:11 AM < 1 min 10° 10° above WNW 10° above WNW  
Sat Jun 2, 9:44 PM 3 min 17° 14° above N 10° above ENE  
Sat Jun 2, 11:19 PM 1 min 36° 15° above NW 36° above NW  
Sun Jun 3, 8:51 PM 3 min 13° 11° above NNW 10° above NE  
Sun Jun 3, 10:28 PM 2 min 44° 26° above NNW 39° above ENE  
Mon Jun 4, 9:36 PM 4 min 27° 21° above N 12° above E  
Mon Jun 4, 11:11 PM 2 min 23° 10° above WNW 23° above W  
Tue Jun 5, 10:20 PM 2 min 74° 23° above WNW 59° above SSE  
Wed Jun 6, 9:28 PM 3 min 55° 33° above NNW 18° above ESE  
Wed Jun 6, 11:04 PM < 1 min 13° 10° above W 13° above WSW  
2018-05-24 00:42:00.0,Wed May 23, 8:42 PM,6 min,71°,10° above SW,10° above ENE|2018-05-24 02:23:00.0,Wed May 23, 10:23 PM,2 min,19°,19° above NNW,10° above NNE|2018-05-24 04:00:00.0,Thu May 24, 00:00 AM,< 1 min,10°,10° above N,10° above N|2018-05-24 05:35:00.0,Thu May 24, 1:35 AM,2 min,16°,10° above NNW,16° above NNE|2018-05-25 01:30:00.0,Thu May 24, 9:30 PM,3 min,28°,28° above NNW,11° above NNE|2018-05-25 03:08:00.0,Thu May 24, 11:08 PM,< 1 min,11°,11° above N,10° above NNE|2018-05-25 04:45:00.0,Fri May 25, 00:45 AM,< 1 min,13°,13° above NNE,12° above NNE|2018-05-26 02:15:00.0,Fri May 25, 10:15 PM,1 min,13°,13° above N,10° above NNE|2018-05-26 03:53:00.0,Fri May 25, 11:53 PM,< 1 min,11°,11° above N,10° above NNE|2018-05-26 05:27:00.0,Sat May 26, 1:27 AM,< 1 min,12°,10° above NNW,12° above NNW|2018-05-27 01:23:00.0,Sat May 26, 9:23 PM,2 min,17°,17° above N,11° above NNE|2018-05-27 03:00:00.0,Sat May 26, 11:00 PM,< 1 min,10°,10° above N,10° above NNE|2018-05-27 04:36:00.0,Sun May 27, 00:36 AM,< 1 min,16°,16° above N,16° above N|2018-05-28 02:08:00.0,Sun May 27, 10:08 PM,< 1 min,11°,11° above N,10° above N|2018-05-28 03:45:00.0,Sun May 27, 11:45 PM,1 min,14°,14° above N,13° above NNE|2018-05-29 01:15:00.0,Mon May 28, 9:15 PM,1 min,12°,12° above N,10° above NNE|2018-05-29 02:52:00.0,Mon May 28, 10:52 PM,2 min,11°,11° above N,10° above NNE|2018-05-29 04:27:00.0,Tue May 29, 00:27 AM,1 min,17°,10° above NW,17° above NNW|2018-05-30 01:59:00.0,Tue May 29, 9:59 PM,1 min,10°,10° above N,10° above NNE|2018-05-30 03:36:00.0,Tue May 29, 11:36 PM,< 1 min,20°,18° above N,20° above NNE|2018-05-31 01:07:00.0,Wed May 30, 9:07 PM,1 min,10°,10° above N,10° above NNE|2018-05-31 02:44:00.0,Wed May 30, 10:44 PM,2 min,15°,14° above N,12° above NE|2018-05-31 04:19:00.0,Thu May 31, 00:19 AM,< 1 min,13°,10° above NW,13° above NW|2018-06-01 01:51:00.0,Thu May 31, 9:51 PM,2 min,12°,11° above N,10° above NE|2018-06-01 03:28:00.0,Thu May 31, 11:28 PM,< 1 min,28°,21° above NNW,28° above N|2018-06-02 00:59:00.0,Fri Jun 1, 8:59 PM,2 min,11°,10° above N,10° above NNE|2018-06-02 02:36:00.0,Fri Jun 1, 10:36 PM,2 min,23°,19° above N,21° above NE|2018-06-02 04:11:00.0,Sat Jun 2, 00:11 AM,< 1 min,10°,10° above WNW,10° above WNW|2018-06-03 01:44:00.0,Sat Jun 2, 9:44 PM,3 min,17°,14° above N,10° above ENE|2018-06-03 03:19:00.0,Sat Jun 2, 11:19 PM,1 min,36°,15° above NW,36° above NW|2018-06-04 00:51:00.0,Sun Jun 3, 8:51 PM,3 min,13°,11° above NNW,10° above NE|2018-06-04 02:28:00.0,Sun Jun 3, 10:28 PM,2 min,44°,26° above NNW,39° above ENE|2018-06-05 01:36:00.0,Mon Jun 4, 9:36 PM,4 min,27°,21° above N,12° above E|2018-06-05 03:11:00.0,Mon Jun 4, 11:11 PM,2 min,23°,10° above WNW,23° above W|2018-06-06 02:20:00.0,Tue Jun 5, 10:20 PM,2 min,74°,23° above WNW,59° above SSE|2018-06-07 01:28:00.0,Wed Jun 6, 9:28 PM,3 min,55°,33° above NNW,18° above ESE|2018-06-07 03:04:00.0,Wed Jun 6, 11:04 PM,< 1 min,13°,10° above W,13° above WSW|

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