ESPN has grown over time since it first began in the 1970s. Since that time, ESPN has acquired many channels and other episodes during its time. One of these is called SportsCenter. It is a television program that actually airs several times a day. These airings can be considered episodes. Usually, these airings or episodes only occur once a day like many other television programs.
However, ESPN SportsCenter actually first began with one episode a day, but it now has twelve. That means that this show happens twelve times a day. This is not unusual for a sports news-type show because so many sports take place during the course of a day. Anchors and reporters explain like they do on a newscast about the sporting events.