ISS Pass Predictor
When is the ISS
visible tonight?
Enter your city and get exact pass times, direction, max elevation, and brightness for the next 7 days.
ISS is currently in orbit at ~408 km altitude
Your Location
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Sky Path — Next Pass
Enter your city above to find ISS passes near you.
What to look for
The ISS looks like a very bright, fast-moving star — no blinking. It crosses the sky in 1–6 minutes and can outshine Venus at magnitude −3.8.
Best conditions
Look just after dusk or before dawn — the ISS needs to be in sunlight while your sky is dark. High-elevation passes (>40°) are the most impressive.
Reading directions
Azimuth is measured clockwise from North. The ISS generally travels from west to east, following its 51.6° orbital inclination.
Iridium flares
The original Iridium satellites produced spectacular flares. The new Iridium NEXT constellation no longer flares — but the ISS itself can reach −4 mag briefly.