Spot The Station

Sighting Location

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Location: Tucson, Arizona, United States

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The following ISS sightings are possible from Friday Apr 25, 2025 through Saturday May 10, 2025

Date	Visible	Max Height	Appears	Disappears
Sun May 4, 4:59 AM	3 min	13°	10° above N	10° above ENE
Tue May 6, 4:59 AM	6 min	32°	10° above NNW	10° above ESE
Wed May 7, 4:11 AM	5 min	19°	10° above NNW	10° above E
Wed May 7, 8:50 PM	2 min	33°	10° above SW	33° above SW
Thu May 8, 3:24 AM	3 min	12°	10° above N	10° above ENE
Thu May 8, 8:02 PM	6 min	36°	10° above SSW	10° above ENE
Thu May 8, 9:40 PM	5 min	18°	10° above W	11° above N
Fri May 9, 4:11 AM	7 min	58°	10° above NW	10° above ESE
Fri May 9, 8:51 PM	6 min	29°	10° above WSW	10° above NNE
Sat May 10, 3:23 AM	6 min	30°	10° above NNW	10° above ESE

{ts '2025-05-04 11:59:00'},Sun May 4, 4:59 AM,3 min,13°,10° above N,10° above ENE|{ts '2025-05-06 11:59:00'},Tue May 6, 4:59 AM,6 min,32°,10° above NNW,10° above ESE|{ts '2025-05-07 11:11:00'},Wed May 7, 4:11 AM,5 min,19°,10° above NNW,10° above E|{ts '2025-05-08 03:50:00'},Wed May 7, 8:50 PM,2 min,33°,10° above SW,33° above SW|{ts '2025-05-08 10:24:00'},Thu May 8, 3:24 AM,3 min,12°,10° above N,10° above ENE|{ts '2025-05-09 03:02:00'},Thu May 8, 8:02 PM,6 min,36°,10° above SSW,10° above ENE|{ts '2025-05-09 04:40:00'},Thu May 8, 9:40 PM,5 min,18°,10° above W,11° above N|{ts '2025-05-09 11:11:00'},Fri May 9, 4:11 AM,7 min,58°,10° above NW,10° above ESE|{ts '2025-05-10 03:51:00'},Fri May 9, 8:51 PM,6 min,29°,10° above WSW,10° above NNE|{ts '2025-05-10 10:23:00'},Sat May 10, 3:23 AM,6 min,30°,10° above NNW,10° above ESE|

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

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.