Gaeldenwüld served much the same role for Atalia as Rome did for Europe, though it wasn't much like Rome in other respects.
A timeline of commonly known history. World-shaking ancient events, relatively minor recent ones, the kind of thing that won't really take a history check to know unless you've been living under a rock (which, admittedly, some of you have). The years are numbered according to the Gaelden Standard, the most widely used (though certainly not the only) dating system.
Gaeldenwüld served much the same role for Atalia as Rome did for Europe, though it wasn't much like Rome in other respects.