Satellite Passes Tonight — Spearfish, SD
Live satellite pass predictions for Spearfish, South Dakota. Updated in real time.
Tonight's Visible Passes
Predictions computed at 5:33 PM. Times shown in local time.
Full Pass Predictions
Interactive predictions with weather, viewing conditions, and more satellites.
Tonight
🛰️ Satellite Passes
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Satellite Watching in Spearfish
Best Viewing Season
Summer through fall (June–November)
Weather Conditions
One of the clearest regions in the US. Low humidity and sparse population make for excellent viewing. Spring severe weather season is the main disruption.
Light Pollution
Spearfish has a Bortle class of 5 (moderate light pollution — bright satellites easily visible). The Great Plains region averages about 130 clear nights per year.
Launch Visibility
Not visible from the Great Plains.
Viewing Tips for Spearfish
The Great Plains offer some of the darkest skies in the continental US. Western Oklahoma, the Nebraska Sandhills, and the South Dakota Badlands are premier dark sky destinations. The flat horizon is ideal for low-elevation passes.
Best Time to Watch
Check for passes during the first 2 hours after sunset or before sunrise. This is when satellites catch sunlight against a dark sky.
What to Look For
Satellites look like steady, bright stars moving smoothly across the sky. They don't blink like airplanes.