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Location: Philadelphia, Pennsylvania, United States

The following ISS sightings are possible from Monday May 20, 2019 through Tuesday Jun 4, 2019

Date Visible Max Height Appears Disappears Share Event
Mon May 20, 9:22 PM 6 min 46° 10° above WSW 10° above NE  
Mon May 20, 11:03 PM 1 min 13° 13° above N 10° above NNE  
Tue May 21, 00:40 AM < 1 min 11° 11° above NNE 10° above NNE  
Tue May 21, 2:15 AM < 1 min 11° 11° above NNW 11° above NNW  
Tue May 21, 10:11 PM 2 min 17° 17° above N 11° above NNE  
Tue May 21, 11:49 PM < 1 min 10° 10° above N 10° above NNE  
Wed May 22, 1:24 AM < 1 min 14° 10° above NNW 14° above NNW  
Wed May 22, 9:20 PM 2 min 23° 23° above NNW 11° above NNE  
Wed May 22, 10:58 PM < 1 min 11° 11° above N 10° above N  
Thu May 23, 00:35 AM < 1 min 14° 14° above N 14° above NNE  
Thu May 23, 10:07 PM 1 min 12° 12° above N 10° above NNE  
Thu May 23, 11:44 PM 2 min 12° 12° above N 10° above NE  
Fri May 24, 1:19 AM < 1 min 10° 10° above NW 10° above NW  
Fri May 24, 9:17 PM 2 min 15° 15° above NNW 10° above NNE  
Fri May 24, 10:55 PM 1 min 11° 11° above N 10° above NNE  
Sat May 25, 00:30 AM 1 min 17° 11° above NNW 17° above NNW  
Sat May 25, 10:05 PM 1 min 11° 11° above N 10° above NNE  
Sat May 25, 11:42 PM 1 min 17° 16° above N 17° above NNE  
Sun May 26, 9:15 PM 1 min 11° 11° above NNW 10° above NNE  
Sun May 26, 10:52 PM 3 min 14° 13° above N 10° above NE  
Mon May 27, 00:27 AM < 1 min 15° 10° above NW 15° above NW  
Mon May 27, 10:03 PM 2 min 12° 11° above N 10° above NNE  
Mon May 27, 11:39 PM < 1 min 25° 19° above NNW 25° above N  
Tue May 28, 9:13 PM 2 min 11° 11° above N 10° above NNE  
Tue May 28, 10:50 PM 2 min 21° 18° above N 19° above NE  
Wed May 29, 00:25 AM < 1 min 10° 10° above WNW 10° above WNW  
Wed May 29, 10:01 PM 3 min 16° 15° above N 10° above ENE  
Wed May 29, 11:36 PM 2 min 27° 10° above NW 27° above NW  
Thu May 30, 9:11 PM 3 min 13° 12° above N 10° above NE  
Thu May 30, 10:48 PM 1 min 41° 25° above NNW 41° above NNE  
Fri May 31, 9:58 PM 3 min 27° 21° above N 17° above ENE  
Fri May 31, 11:34 PM < 1 min 17° 12° above WNW 17° above WNW  
Sat Jun 1, 9:09 PM 4 min 19° 15° above N 11° above ENE  
Sat Jun 1, 10:45 PM 2 min 67° 18° above WNW 67° above W  
Sun Jun 2, 9:56 PM 3 min 61° 33° above NNW 30° above ESE  
Mon Jun 3, 9:07 PM 4 min 36° 24° above NNW 11° above E  
Mon Jun 3, 10:42 PM 2 min 23° 11° above WNW 23° above WSW  
2019-05-21 01:22:00.0,Mon May 20, 9:22 PM,6 min,46°,10° above WSW,10° above NE|2019-05-21 03:03:00.0,Mon May 20, 11:03 PM,1 min,13°,13° above N,10° above NNE|2019-05-21 04:40:00.0,Tue May 21, 00:40 AM,< 1 min,11°,11° above NNE,10° above NNE|2019-05-21 06:15:00.0,Tue May 21, 2:15 AM,< 1 min,11°,11° above NNW,11° above NNW|2019-05-22 02:11:00.0,Tue May 21, 10:11 PM,2 min,17°,17° above N,11° above NNE|2019-05-22 03:49:00.0,Tue May 21, 11:49 PM,< 1 min,10°,10° above N,10° above NNE|2019-05-22 05:24:00.0,Wed May 22, 1:24 AM,< 1 min,14°,10° above NNW,14° above NNW|2019-05-23 01:20:00.0,Wed May 22, 9:20 PM,2 min,23°,23° above NNW,11° above NNE|2019-05-23 02:58:00.0,Wed May 22, 10:58 PM,< 1 min,11°,11° above N,10° above N|2019-05-23 04:35:00.0,Thu May 23, 00:35 AM,< 1 min,14°,14° above N,14° above NNE|2019-05-24 02:07:00.0,Thu May 23, 10:07 PM,1 min,12°,12° above N,10° above NNE|2019-05-24 03:44:00.0,Thu May 23, 11:44 PM,2 min,12°,12° above N,10° above NE|2019-05-24 05:19:00.0,Fri May 24, 1:19 AM,< 1 min,10°,10° above NW,10° above NW|2019-05-25 01:17:00.0,Fri May 24, 9:17 PM,2 min,15°,15° above NNW,10° above NNE|2019-05-25 02:55:00.0,Fri May 24, 10:55 PM,1 min,11°,11° above N,10° above NNE|2019-05-25 04:30:00.0,Sat May 25, 00:30 AM,1 min,17°,11° above NNW,17° above NNW|2019-05-26 02:05:00.0,Sat May 25, 10:05 PM,1 min,11°,11° above N,10° above NNE|2019-05-26 03:42:00.0,Sat May 25, 11:42 PM,1 min,17°,16° above N,17° above NNE|2019-05-27 01:15:00.0,Sun May 26, 9:15 PM,1 min,11°,11° above NNW,10° above NNE|2019-05-27 02:52:00.0,Sun May 26, 10:52 PM,3 min,14°,13° above N,10° above NE|2019-05-27 04:27:00.0,Mon May 27, 00:27 AM,< 1 min,15°,10° above NW,15° above NW|2019-05-28 02:03:00.0,Mon May 27, 10:03 PM,2 min,12°,11° above N,10° above NNE|2019-05-28 03:39:00.0,Mon May 27, 11:39 PM,< 1 min,25°,19° above NNW,25° above N|2019-05-29 01:13:00.0,Tue May 28, 9:13 PM,2 min,11°,11° above N,10° above NNE|2019-05-29 02:50:00.0,Tue May 28, 10:50 PM,2 min,21°,18° above N,19° above NE|2019-05-29 04:25:00.0,Wed May 29, 00:25 AM,< 1 min,10°,10° above WNW,10° above WNW|2019-05-30 02:01:00.0,Wed May 29, 10:01 PM,3 min,16°,15° above N,10° above ENE|2019-05-30 03:36:00.0,Wed May 29, 11:36 PM,2 min,27°,10° above NW,27° above NW|2019-05-31 01:11:00.0,Thu May 30, 9:11 PM,3 min,13°,12° above N,10° above NE|2019-05-31 02:48:00.0,Thu May 30, 10:48 PM,1 min,41°,25° above NNW,41° above NNE|2019-06-01 01:58:00.0,Fri May 31, 9:58 PM,3 min,27°,21° above N,17° above ENE|2019-06-01 03:34:00.0,Fri May 31, 11:34 PM,< 1 min,17°,12° above WNW,17° above WNW|2019-06-02 01:09:00.0,Sat Jun 1, 9:09 PM,4 min,19°,15° above N,11° above ENE|2019-06-02 02:45:00.0,Sat Jun 1, 10:45 PM,2 min,67°,18° above WNW,67° above W|2019-06-03 01:56:00.0,Sun Jun 2, 9:56 PM,3 min,61°,33° above NNW,30° above ESE|2019-06-04 01:07:00.0,Mon Jun 3, 9:07 PM,4 min,36°,24° above NNW,11° above E|2019-06-04 02:42:00.0,Mon Jun 3, 10:42 PM,2 min,23°,11° above WNW,23° above WSW|

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