International Space Station
Elevation rating: High. A higher elevation generally means a better viewing opportunity.
WXSim: M.CLOUDY. Cloud cover is interpolated at the ISS peak time; local cloud positions may differ.
ISS times assume an unobstructed horizon. The cloud outlook is advisory, not a guarantee of visibility.
Path across the sky
Fri, Oct 16 · 5:51 AM EDT
North is at the top; east is to the right. The center represents directly overhead (90°). The outer circle is the horizon (0°).
Upcoming visible passes
| Date | Start | Direction | Max elev. | Duration | WXSim clouds | Outlook | Sky plot |
|---|---|---|---|---|---|---|---|
| Thu, Oct 15 | 6:36 AM | SW → NE | 79.0° | 6m 40s | 100% | Unfavorable | View path |
| Fri, Oct 16 | 5:51 AM | S → ENE | 56.7° | 4m 00s | 80% | Unfavorable | View path |
| Sat, Oct 17 | 5:06 AM | E → ENE | 20.3° | 1m 20s | 82% | Unfavorable | View path |
| Sat, Oct 17 | 6:39 AM | W → NNE | 29.0° | 5m 10s | 65% | Unfavorable | View path |
| Sun, Oct 18 | 5:54 AM | NNW → NE | 43.9° | 3m 00s | 0% | Favorable | View path |
| Mon, Oct 19 | 5:09 AM | NE → NE | 17.2° | 0m 50s | — | Forecast unavailable | View path |
| Mon, Oct 19 | 6:42 AM | NW → NNE | 15.5° | 3m 50s | — | Forecast unavailable | View path |
| Tue, Oct 20 | 5:57 AM | N → NNE | 19.4° | 2m 00s | — | Forecast unavailable | View path |
| Wed, Oct 21 | 6:46 AM | NNW → N | 10.4° | 1m 10s | — | Forecast unavailable | View path |
Code and Data Sources
This tracker uses Skyfield, an open-source Python astronomy library, and its SGP4 orbit-propagation dependency to predict ISS positions and illumination. The ISS orbital elements are provided by CelesTrak (supplemental GP/TLE data). Local cloud-cover forecasts are generated by WXSim and supplied by HBurg-WX. Pass filtering, forecast integration, and this display were developed for HBurg-WX.
The viewing outlook is an estimate based on predicted cloud cover at the time of maximum ISS elevation; it does not account for the position of individual clouds or local obstructions. Skyfield and SGP4 are third-party open-source packages; WXSim is separate forecasting software.