Esperian calendar

Calendar dating from the Cataclysm, an event in the Esper Dimension that destroyed the "World of Balance" and ushered in the "World of Ruin"; hence, time before the event is dated "WB" (getting larger as farther away from the event) and events afterward are dated "WR"; there is no year 0. Widely used throughout the Web as this became the official dating system used by the Grand Army and the Dark Wrath during the Great War.

The current year is 46 WR; one Kupopolis year last six real-world months. Most of the time.