If you mean the Cable TV station, it was launched in 1977 as "Pinwheel" and renamed to "Nickelodeon" 2 years later in 1979. First they made it in 1950's but in black n white.
1999 was Nickelodeon's big year. 1999 was Nickelodeon's 20th Birthday year.
Sometime in 2013 on Nickelodeon
in 1988
The link below has a list of every Nickelodeon show ever made.
Well, Nickelodeon was launched in December 1st, 1977 as Pinwheel. So Nickelodeon was launched in April Fools Day 1979.
2005
in the year of 1888 in the year of 1888
10 years.
Nickelodeon studios
yes
1991
Yes