Acquiring signal…
Good viewing — ascent tracking should hold through the deck.
A jellyfish plume climbs above 100 km and is visible for hundreds of kilometers — but only through clear sky. Cloud cover is the single biggest factor in whether you'll actually see it.
After the payload is away the stage fires again to drop itself out of orbit, near 1409 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 3,353 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.