Holy Imperial calendar

The Holy Imperial calendar (聖皇暦, Hijiri kōreki) is the calendar used by the Holy Empire of Ionia in Genso Suikoden Tsumugareshi Hyakunen no Toki.

Information
The Holy Imperial calendar begins in the year 0 with the founding of the Holy Empire of Ionia and the establishment of the barrier to protect its lands from the Teras Pharma.