B.GNE (Before Great New Era)
The era notation system in Batworld was established after the massive war between Wieglington, Cheong-gyeong, and Towred came to an end. As the three nations signed peace agreements, they collectively agreed to mark the beginning of a new era called GNE (Great New Era).
The period known as B.GNE (Before Great New Era) spans around 60 years of intermittent wars and ceasefires, during which three full-scale world wars occurred.
In birth records, a higher GNE number indicates a younger person, while a lower GNE number means an older person.
Conversely, in B.GNE, a higher number means the person is older, and a lower number means they are younger.
The official declaration of the GNE calendar system took place on GNE 0.05.08 (Year 0, Month 5, Day 8).
Any individual born on or after this date is officially categorized under GNE.
As of the current timeline, most characters in their 30s and 40s or older are categorized under B.GNE.