Spot The Station

Sighting Location

Location: Sioux Falls, South Dakota, United States

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The following ISS sightings are possible from Wednesday Apr 24, 2019 through Friday May 10, 2019

Date	Visible	Max Height	Appears	Disappears
Mon Apr 29, 5:19 AM	4 min	23°	11° above S	17° above E
Tue Apr 30, 4:30 AM	3 min	13°	12° above SSE	10° above E
Wed May 1, 5:14 AM	3 min	57°	19° above SW	33° above E
Thu May 2, 4:25 AM	3 min	31°	30° above SSE	15° above E
Fri May 3, 3:36 AM	< 1 min	14°	14° above ESE	11° above E
Fri May 3, 5:09 AM	3 min	61°	18° above WSW	36° above NE
Sat May 4, 4:20 AM	2 min	78°	72° above SSW	25° above ENE
Sun May 5, 3:31 AM	2 min	27°	27° above E	11° above ENE
Sun May 5, 5:04 AM	4 min	33°	14° above W	24° above NNE
Mon May 6, 4:15 AM	2 min	48°	43° above WNW	26° above NE
Tue May 7, 3:26 AM	1 min	38°	38° above NE	17° above NE
Tue May 7, 4:59 AM	4 min	23°	11° above WNW	19° above NNE
Wed May 8, 2:36 AM	< 1 min	12°	12° above ENE	10° above ENE
Wed May 8, 4:09 AM	2 min	28°	21° above WNW	24° above NNE
Wed May 8, 5:45 AM	< 1 min	10°	10° above NW	10° above NW
Thu May 9, 3:20 AM	1 min	36°	36° above N	23° above NNE
Thu May 9, 4:54 AM	3 min	19°	10° above NW	19° 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

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