Baby Calendar, Inc. engages in information media business for pregnancy, childbirth, and childcare. It also provides management support solutions for obstetrics and gynecology. It operates through the Media Business and Obstetrics and Gynecology Business segments. The Media Business segment sells advertising space for sales promotion. The Obstetrics and Gynecology Business segment offers information technology (IT)-based solutions for the obstetrics and gynecology field. The company was founded on April 5, 1991 and is headquartered in Tokyo, Japan.