These are typically referred to as NatsuComi (夏コミ, Natsukomi) and FuyuComi (冬コミ, Fuyukomi), contractions of Summer Comiket and Winter Comiket respectively.
De omtales typisk som NatsuComi (夏コミ, Natsukomi) og FuyuComi (冬コミ, Fuyukomi) (kort for Sommer Comic Market og Vinter Comic Market).