Once Upon a Planet was created on 1973-11-03.
Once Upon a Time... Planet Earth was created on 2008-12-22.
The duration of Once Upon a Time... Planet Earth is 1500.0 seconds.
Once Upon an Era was created in 1994.
Once Upon a Troubadour was created in 1997.
Once Upon a Dinosaur was created in 1987.
Once Upon an Island was created in 1967.
Once Upon A... was created on 1997-05-20.
Once Upon a Dog was created in 1982.
Once Upon a Classic was created in 1976.
Once Upon the Cross was created in 1994.
Once Upon a Mattress was created in 1959.
Once Upon a Time...When We Were Colored was created in 1996.