I don't know if there's been any datamining for this game, but I don't see anything in this thread and I found out about the game from SGF so here's something.
>Mystrix is coming on {07-10 06:00|utctime} {(UTC)}
>Assassin is coming on {07-10 06:00|utctime} {(UTC)}
>Inventor is coming on {01-22 06:00|utctime} {(UTC)}
Glaciette's line is missing but her reservation event seems to start on 10-16. I only spent a minute looking, but these don't seem to be the CN dates. They can still be placeholders, of course.

And here are the stamps:
https://litter.catbox.moe/m94kxzsoh987q5m6.rar