Adult Swim (stylized as [adult swim] or [as]) is a programming block of the American cable network Cartoon Network that operates nightly from 9:00 p.m. to 6:00 a.m., Eastern and Pacific Time. It is programmed by Williams Street Productions, a subsidiary of Turner, which also developed two prior television programming blocks seen on Cartoon Network: Toonami (which later became a block on Adult Swim in 2012) and Miguzi. The name comes from a phrase used by public swimming pools in the United States to label designated times when children are restricted from using the facilities in favor of adults.