Ender's Game and Speaker for the Dead time/year

[Haqu]

Hello!
I know, that "Speaker for the Dead" is set approx. 3000 years after "Ender's Game", but it starts by words "in 1830..." - what does it mean? Is it different unit of time? I'm trying to figure out what event started a new era (like B.C and A.C) Was it a xenocide? If yes, should not it be "in 3000..." or something like that? Or maybe it was the first invasion? I've read "edner's Game" "Ender on Exile" and "Speaker for the Dead" and i really don't know why the last one starts with that date. Maybe I'm just dumb, but if anyone could explain this to me, that would be great

[spanish_rockette]

Correct me if I am wrong but I'm believe that the dates "restarted" after the adoption of Starways Code or Starways Congress (I forgot which one its called)

[Vitaly Kolmogorov]

yes, its reletive to the adaption of starways congress [years] BSC (before starwys congress) and [years] ASC (After Starways Congress)

[Ansible]

Another good question before that's answered; When does Earth Unaware take place?

I think OSC made the Enderverse so there is no certain time. Of course it's in the future, but that's the fun and mystery of it. There's no certain prediction based on evolution in technology either... Weren't we supposed to have jetpacks and hoverboards by now?