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Sighting Location

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Location: Chelmsford, England, United Kingdom

The following ISS sightings are possible from Wednesday Feb 24, 2021 through Thursday Mar 11, 2021

Date Visible Max Height Appears Disappears Share Event
Thu Feb 25, 3:50 AM < 1 min 10° 10° above ESE 10° above ESE  
Thu Feb 25, 5:23 AM 5 min 44° 23° above SW 10° above E  
Fri Feb 26, 4:37 AM 3 min 33° 33° above SSE 10° above E  
Sat Feb 27, 3:52 AM 1 min 16° 16° above ESE 10° above E  
Sat Feb 27, 5:25 AM 5 min 72° 28° above WSW 10° above E  
Sun Feb 28, 4:39 AM 3 min 58° 57° above SE 10° above E  
Mon Mar 1, 3:54 AM 1 min 20° 20° above E 10° above E  
Mon Mar 1, 5:26 AM 5 min 89° 24° above W 10° above E  
Tue Mar 2, 4:41 AM 3 min 83° 80° above SW 10° above E  
Wed Mar 3, 3:55 AM 2 min 26° 26° above E 10° above E  
Wed Mar 3, 5:28 AM 6 min 87° 21° above W 10° above E  
Thu Mar 4, 4:42 AM 4 min 89° 69° above W 10° above E  
Fri Mar 5, 3:57 AM 2 min 31° 31° above E 10° above E  
Fri Mar 5, 5:30 AM 6 min 66° 18° above W 10° above ESE  
Sat Mar 6, 3:11 AM < 1 min 11° 11° above E 10° above E  
Sat Mar 6, 4:44 AM 4 min 78° 55° above W 10° above ESE  
Sun Mar 7, 3:58 AM 2 min 36° 36° above E 10° above E  
Sun Mar 7, 5:31 AM 6 min 39° 15° above W 10° above SE  
Mon Mar 8, 3:13 AM < 1 min 11° 11° above E 10° above E  
Mon Mar 8, 4:46 AM 4 min 52° 45° above WSW 10° above SE  
Tue Mar 9, 4:00 AM 2 min 29° 29° above ESE 10° above ESE  
Tue Mar 9, 5:33 AM 5 min 21° 13° above W 10° above SSE  
Wed Mar 10, 4:48 AM 3 min 29° 29° above SSW 10° above SSE  
Thu Mar 11, 4:02 AM 1 min 19° 19° above SE 10° above SE  
2021-02-25 03:50:00.0,Thu Feb 25, 3:50 AM,< 1 min,10°,10° above ESE,10° above ESE|2021-02-25 05:23:00.0,Thu Feb 25, 5:23 AM,5 min,44°,23° above SW,10° above E|2021-02-26 04:37:00.0,Fri Feb 26, 4:37 AM,3 min,33°,33° above SSE,10° above E|2021-02-27 03:52:00.0,Sat Feb 27, 3:52 AM,1 min,16°,16° above ESE,10° above E|2021-02-27 05:25:00.0,Sat Feb 27, 5:25 AM,5 min,72°,28° above WSW,10° above E|2021-02-28 04:39:00.0,Sun Feb 28, 4:39 AM,3 min,58°,57° above SE,10° above E|2021-03-01 03:54:00.0,Mon Mar 1, 3:54 AM,1 min,20°,20° above E,10° above E|2021-03-01 05:26:00.0,Mon Mar 1, 5:26 AM,5 min,89°,24° above W,10° above E|2021-03-02 04:41:00.0,Tue Mar 2, 4:41 AM,3 min,83°,80° above SW,10° above E|2021-03-03 03:55:00.0,Wed Mar 3, 3:55 AM,2 min,26°,26° above E,10° above E|2021-03-03 05:28:00.0,Wed Mar 3, 5:28 AM,6 min,87°,21° above W,10° above E|2021-03-04 04:42:00.0,Thu Mar 4, 4:42 AM,4 min,89°,69° above W,10° above E|2021-03-05 03:57:00.0,Fri Mar 5, 3:57 AM,2 min,31°,31° above E,10° above E|2021-03-05 05:30:00.0,Fri Mar 5, 5:30 AM,6 min,66°,18° above W,10° above ESE|2021-03-06 03:11:00.0,Sat Mar 6, 3:11 AM,< 1 min,11°,11° above E,10° above E|2021-03-06 04:44:00.0,Sat Mar 6, 4:44 AM,4 min,78°,55° above W,10° above ESE|2021-03-07 03:58:00.0,Sun Mar 7, 3:58 AM,2 min,36°,36° above E,10° above E|2021-03-07 05:31:00.0,Sun Mar 7, 5:31 AM,6 min,39°,15° above W,10° above SE|2021-03-08 03:13:00.0,Mon Mar 8, 3:13 AM,< 1 min,11°,11° above E,10° above E|2021-03-08 04:46:00.0,Mon Mar 8, 4:46 AM,4 min,52°,45° above WSW,10° above SE|2021-03-09 04:00:00.0,Tue Mar 9, 4:00 AM,2 min,29°,29° above ESE,10° above ESE|2021-03-09 05:33:00.0,Tue Mar 9, 5:33 AM,5 min,21°,13° above W,10° above SSE|2021-03-10 04:48:00.0,Wed Mar 10, 4:48 AM,3 min,29°,29° above SSW,10° above SSE|2021-03-11 04:02:00.0,Thu Mar 11, 4:02 AM,1 min,19°,19° above SE,10° above SE|

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

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