Is Nickelodeon and nick at night the same channel?

Nickelodeon and Nick at Nite are two separate channels. Nickelodeon is a children's television network, while Nick at Nite is a programming block that airs on TeenNick from 10:00 p.m. to 6:00 a.m. Eastern and Pacific Time. Nick at Nite airs classic Nickelodeon shows, as well as some original programming.