Enter (or auto-detect) your coordinates to calculate the next visible International Space Station pass over you. We model lighting to distinguish visually observable passes from daylight radio-only passes and highlight the best sighting opportunities.
Need the live map instead? Visit the Live ISS Tracker for real-time position, altitude and speed, then come back here to plan your viewing.
The station must be sunlit while your observing point is in darkness or twilight. We compute solar elevation for both you and the ISS at each second of a pass.
Higher maximum elevation, longer duration, and brighter (more negative) magnitude values increase quality; we label the best combinations as “Great Pass!”
All passes in the next several days may occur in daylight. Try again in a few days; the timing of evening and dawn passes shifts earlier daily.
Predictions generally match official sources within seconds. Atmospheric drag and orbital adjustments can introduce small shifts; re-check close to viewing time.
The ISS appears as a bright, fast-moving white point with steady brightness (no flashing). It rises in the indicated start direction, peaks near max elevation, then fades toward the end direction.