People eat it at inokoku (the hour of boar, or around 10:00 pm) on inoko (inohi of inotsuki) (the day of boar in the month of boar or October under the old calendar).
亥の子（旧暦10月（亥の月）の亥の日）の亥の刻（午後10時ごろ）に食べられる。