Sightings

See the ISS over Porto

Portugal · local time

The International Space Station makes 12 visible passes over Porto in the next few nights. Each one is a bright, fast-moving point of light crossing the sky in a matter of minutes — no telescope needed. Times below are in Porto's local clock.

Sun 28 Jun 03:23
Visible
6m 30s
Max height
31°
Brightness
+0.7 faint
Appears → Leaves
W → NE
60° 30° NESW rise
Where to look — the arc across your sky
Ground track — the path beneath the Station
Sun 28 Jun 05:02
Visible
4m
Max height
14°
Brightness
+2.0 very faint
Appears → Leaves
NW → NE
60° 30° NESW rise
Where to look — the arc across your sky
Ground track — the path beneath the Station
Mon 29 Jun 02:35
Visible
6m 30s
Max height
46°
Brightness
+2.5 very faint
Appears → Leaves
WSW → NE
60° 30° NESW rise
Where to look — the arc across your sky
Ground track — the path beneath the Station
Mon 29 Jun 04:14
Visible
4m 30s
Max height
16°
Brightness
+1.8 faint
Appears → Leaves
NW → NNE
60° 30° NESW rise
Where to look — the arc across your sky
Ground track — the path beneath the Station
Tue 30 Jun 01:47
Visible
7m
Max height
74°
Brightness
+3.2 very faint
Appears → Leaves
WSW → NE
60° 30° NESW rise
Where to look — the arc across your sky
Ground track — the path beneath the Station
Tue 30 Jun 03:25
Visible
5m
Max height
19°
Brightness
+1.7 faint
Appears → Leaves
WNW → NNE
60° 30° NESW rise
Where to look — the arc across your sky
Ground track — the path beneath the Station
Tue 30 Jun 05:04
Visible
4m
Max height
14°
Brightness
+2.7 very faint
Appears → Leaves
NNW → NE
60° 30° NESW rise
Where to look — the arc across your sky
Ground track — the path beneath the Station
Wed 1 Jul 02:37
Visible
6m
Max height
23°
Brightness
+2.1 very faint
Appears → Leaves
WNW → NE
60° 30° NESW rise
Where to look — the arc across your sky
Ground track — the path beneath the Station
Wed 1 Jul 04:16
Visible
3m 30s
Max height
14°
Brightness
+3.1 very faint
Appears → Leaves
NNW → NE
60° 30° NESW rise
Where to look — the arc across your sky
Ground track — the path beneath the Station
Thu 2 Jul 01:49
Visible
6m
Max height
32°
Brightness
+3.4 very faint
Appears → Leaves
W → NE
60° 30° NESW rise
Where to look — the arc across your sky
Ground track — the path beneath the Station
Thu 2 Jul 03:27
Visible
4m
Max height
14°
Brightness
+3.0 very faint
Appears → Leaves
NW → NNE
60° 30° NESW rise
Where to look — the arc across your sky
Ground track — the path beneath the Station
Thu 2 Jul 05:05
Visible
4m 30s
Max height
18°
Brightness
+2.6 very faint
Appears → Leaves
NNW → ENE
60° 30° NESW rise
Where to look — the arc across your sky
Ground track — the path beneath the Station
See it live from your exact spot Get pass alerts on your phone

How to read this

  • Max height — how high the ISS climbs above the horizon at its peak, in degrees (90° is straight overhead). Higher passes are brighter and easier to spot.
  • Brightness — apparent magnitude; lower (more negative) is brighter. At its best the ISS outshines every star.
  • Appears → Leaves — the compass direction it rises from and sets toward. The station always tracks roughly west-to-east.

Want the underlying mechanics? Read how to spot the ISS, why passes only happen at dawn and dusk, and how the station's brightness is worked out.

Frequently asked

When is the ISS visible from Porto?

The next visible pass over Porto is on Sun 28 Jun at 03:23 local time, climbing to 31° above the horizon. The station is only visible when it is sunlit and your sky is dark — around dawn and dusk — so favourable windows come in clusters of a few days, then disappear for a week or two as the orbit drifts.

Which direction should I look to see the ISS from Porto?

For the next pass, look toward the W as it rises and follow it across to the NE. The ISS always travels roughly west-to-east and crosses in two to six minutes — no telescope needed, it looks like a bright, steady star moving steadily across the sky.

How bright does the ISS get over Porto?

At its best in this window the station reaches magnitude +0.7 (faint) — bright enough to outshine every star and most planets. The higher it climbs and the closer it passes to overhead, the brighter it appears.

Are these ISS pass times accurate?

Yes — they are computed from the latest published orbital element set (TLE) using the standard SGP4 model, the same maths professional tracking tools use. Times are shown in Porto's local clock and refreshed continuously as a newer element set is published. For a live sky view and a phone-pointing AR mode, use the tracker on the home page.

Coordinates 41.16°N, 8.63°W · orbital data updated · computed with the SGP4 model.