Nickelodeon (commonly referred to as Nick) is an American cable television network owned by Viacom International, founded in 1979 as Pinwheel. The Pinwheel name was used until 1981. The channel is found in many different countries, including Nick UK and Nickelodeon Australia. Nick is also split up into several blocks, such as Nick at Nite and Nick Jr.The channel focuses on kids from ages 7 through 12. Nick at Nite is meant for older kids who have outgrown the channel and Nick Jr. focuses on kids ages 2 through 6. Every morning on Nickelodeon, Nick Jr. goes through the hours of 8:00 AM to 2:30 PM (Summer hours may vary). Every night on Nickelodeon, Nick at Nite goes through the hours of 9pm to 6am Mon-Thu and on Sunday (can also start at 9:30PM on Sunday if Nick News is aired), and 10pm to 6am on Friday and Saturday.