Nickelodeon Sign-On and Sign-Offs

A sign-on is the beginning of operations for a TV channel or radio station, while a sign-off is the end of operations for said media. Although Nickelodeon is a 24/7 family friendly channel, it's main channel is divided into three blocks. The main Nickelodeon portion signs on weekday afternoons or at 7pm ET on weekend/holiday mornings and signs off every evening at 9pm ET and sometimes 10pm ET. In the past Nickelodeon shared channel space with Arts and Entertainment Network.
=== 1979-1981 ===
No sign on or sign off used. 
=== Silver Ball in the Air (1981-1984) ===
==== Sign-On ====
Someone finds a coin and flips it into the air, then many spherical objects are shown before the Nickelodeon silver ball logo appears, with a choral saying 'Silver ball in the air, silver ball everywhere, Nickelodeon!'.
==== Sign-Off ====
In space a silver ball moves through the air, other silver balls are shown moving though space until the first silver ball turns into the Nickelodeon logo.
No sign-on or sign-off has been used since then.
Category:Nickelodeon