Acquiring signal…
After the payload is away the stage fires again to drop itself out of orbit, near 282 km. The exhaust expands into near-vacuum and stays sunlit long after the ground has gone dark — the same conditions as an ascent jellyfish, from three times higher.
Burn point and de-orbit track from the published Assembly Bay mission.
Set your location to see exactly which way to look, how high the plume climbs, and whether you're inside a viewing zone.
Set your location above and this becomes the useful question: not where the burn is visible from, but which part of the window you get.
A stage in low orbit covers about 440 km of ground track every minute, so ±5 minutes is a corridor 4,477 km long — not a margin around a point. Every burn time here is notional until it is confirmed.
Zones match the grade meter: Possible (outer) → Likely → Prime (inner). Closer to the plume and deeper in twilight means a brighter, higher show. The burn is short — be looking before the window opens, into the darker part of the sky.