Season 1 of Was bin ich? premiered on January 2, 1955.

Season 2 of Was bin ich? premiered on February 25, 1956.

Season 3 of Was bin ich? premiered on January 26, 1957.

Season 4 of Was bin ich? premiered on February 8, 1958.

Season 5 of Was bin ich? premiered on February 11, 1961.

Season 6 of Was bin ich? premiered on January 17, 1962.

Season 7 of Was bin ich? premiered on January 9, 1963.

Season 8 of Was bin ich? premiered on January 15, 1964.

Season 9 of Was bin ich? premiered on January 20, 1965.

Season 10 of Was bin ich? premiered on January 26, 1966.

Season 11 of Was bin ich? premiered on January 31, 1967.

Season 12 of Was bin ich? premiered on January 23, 1968.

Season 13 of Was bin ich? premiered on January 14, 1969.

Season 14 of Was bin ich? premiered on January 20, 1970.

Season 15 of Was bin ich? premiered on January 26, 1971.

Season 16 of Was bin ich? premiered on January 11, 1972.

Season 17 of Was bin ich? premiered on January 16, 1973.

Season 18 of Was bin ich? premiered on January 29, 1974.

Season 19 of Was bin ich? premiered on January 28, 1975.

Season 20 of Was bin ich? premiered on January 20, 1976.

Season 21 of Was bin ich? premiered on February 1, 1977.

Season 22 of Was bin ich? premiered on January 17, 1978.

Season 23 of Was bin ich? premiered on January 15, 1979.

Season 24 of Was bin ich? premiered on January 15, 1980.

Season 25 of Was bin ich? premiered on January 27, 1981.

Season 26 of Was bin ich? premiered on January 12, 1982.

Season 27 of Was bin ich? premiered on January 4, 1983.

Season 28 of Was bin ich? premiered on January 31, 1984.

Season 29 of Was bin ich? premiered on January 1, 1985.

Season 30 of Was bin ich? premiered on January 14, 1986.

Season 31 of Was bin ich? premiered on January 6, 1987.

Season 32 of Was bin ich? premiered on February 9, 1988.

Season 33 of Was bin ich? premiered on January 10, 1989.

Season 34 of Was bin ich? premiered on October 5, 2000.