Nick Jr. (Circlia)

Nick Jr. is a half-block half-channel on Nickelodeon (Circlia) and ran from November 7 1994 to present. It is aimed at children under the age of six. Most of it's programs are preschool-oriented, as you may know, Dora the Explorer, PAW Patrol, Cindi and Friends, Boj, Super WHY and other programs that are broadcast on the channel's main competitor, Mini, which is also a preschool-oriented channel. The block ended in 2019, and was avaliable as a channel only.

NickMom
NickMom is the midnight block of the Nick Jr. channel, designed for moms of kids. It was introduced in 2006, with the name of Nickelodeon Mom, and was changed to just NickMom in 2010. Like the worldwide version, it sucessfully shutted down at 6:59 AM, when the Nick Jr. channel was ready to start.

Trivia

 * It's the only fictional Nick Jr. to not air Rainbow Ruby.