Tonight in Nagaoka, Japan · More in Japan →
MaybeNagaoka night sky · Sat, Oct 17, dark 18:02–4:58 GMT+9
- Aurora unlikely. Tonight's forecast peaks at Kp 2.0. From here you'd usually need about Kp 9, which takes a rare, extreme storm.
- Space station passes at 3:22, up to 33° high, moving S → E. It looks like a bright, steady star that crosses the sky in a few minutes.
- Moon 38% lit (Waxing Crescent), above the horizon for 32% of the dark hours.
- Clouds: about 10% effective cover during dark hours, so mostly clear.
Updated 4 min ago. Times in Asia/Tokyo (GMT+9).
Clouds tonight
16:00clouds, % of sky5:00
Aurora reach
Kp 9+ needed
Magnetic latitude 31.6° N, too far from either auroral zone in all but the rarest storms. Tonight's forecast peak: Kp 2.0. Live map →
Moon
38% lit
Waxing Crescent. Up for 32% of dark hours.
Next meteor peak
Orionids
Peak night Oct 21–22 · Moon 82% lit
Next visible space station passes
| When (GMT+9) | Highest | Path |
|---|---|---|
| Sun, Oct 18, 3:19 | 33° | S → E |
| Sun, Oct 18, 4:56 | 26° | W → NE |
Visible passes only: station sunlit, your sky dark. Computed from CelesTrak orbital data.
Launches within view
No scheduled launches within 1,000 km in the next week or so.
Free alerts
Get a heads-up when it's worth going out
One email when your sky is genuinely worth it: an aurora within reach, a launch you can see, a clear peak night. Nothing on ordinary nights. We'll confirm your address first, and you can unsubscribe in one click.
Nearby
Nagaoka, Japan · 37.45°, 138.85° · population 266,936 (GeoNames). The score is an estimate; here's how it's made.