Nick Jr. is a television block that premiered on the U.S cable channel Nickelodeon on January 4, 1988 and an American digital cable and satellite television channel that is run by the Viacom Kids & Family Group, a unit of the Viacom Media Networks division of Viacom, the channel's ultimate owner. The channel, which is aimed at children between 2 and 6 years old, features a mix of originally-produced programming, and series previously and concurrently aired on the "Nick: The Smart Place to Play" block, and its previous iterations, on Nickelodeon. Due to the Nickelodeon block, Nick Jr. is sometimes disclaimed on air as "the Nick Jr. channel" to avert confusion, especially times of day where both Nickelodeon and Nick Jr. are both carrying preschool programming.