Well old republic is older than High Republic.
Takes of the Jefi/KotoR through to Darth Bane.
Lost colony planet might be older than High Republic.
OK so what we know so far is that the people of At Attin (or at least the section of it that we've seen so far) are isolated from the rest of the galaxy by a cloudy barrier that prevents them from seeing the stars at night. (There were also some red lights in amongst the cloudy stuff, so I suspect there's a mechanical element to the barrier as well.) We also know that their society uses droids as teachers, tram drivers, guards, and so on. They also use Old Republic credits as currency (although they also learn about liquidity and "the fungibility of multiple currencies" at middle school.)
I suspect they also have means of tracking the kids, at the very least, given how quickly the enforcer droid found Wim after he fell into the ravine.
The fact that the
Onyx Cinder was upside down when the kids found it suggests that it crashed on the planet. I initially thought that the ravine might have been created by the ship as it crashed, but it seemed more like the ship was buried in the side of the ravine rather than at one end of it. It was located in a restricted area, but it's unclear whether the area was restricted because of the ship or if that was just a coincidence.
The fact that the ship was buried under soil and organic matter suggests it had been there for quite some time.
One thing that always amuses me about Star Wars is how, on the one hand, you've got a ship like the
Millennium Falcon that requires constant maintenance to keep it going but, on the other hand, there are ancient droids and spaceships that will turn back on as if they've only been off for hours or days rather than centuries. I guess "They don't make 'em like that anymore" holds true in the GFFA too.
