Season 1 of Time premiered on January 1, 1968.

Season 2 of Time premiered on January 2, 1969.

Season 3 of Time premiered on January 2, 1970.

Season 4 of Time premiered on January 2, 1971.

Season 5 of Time premiered on January 2, 1972.

Season 6 of Time premiered on January 2, 1973.

Season 7 of Time premiered on January 2, 1974.

Season 8 of Time premiered on January 2, 1975.

Season 9 of Time premiered on January 2, 1976.

Season 10 of Time premiered on January 2, 1977.

Season 11 of Time premiered on January 2, 1978.

Season 12 of Time premiered on January 2, 1979.

Season 13 of Time premiered on January 2, 1980.

Season 14 of Time premiered on January 2, 1981.

Season 15 of Time premiered on January 2, 1982.

Season 16 of Time premiered on January 2, 1983.

Season 17 of Time premiered on January 2, 1984.

Season 18 of Time premiered on January 2, 1985.

Season 19 of Time premiered on January 2, 1986.

Season 20 of Time premiered on January 2, 1987.

Season 21 of Time premiered on January 2, 1988.

Season 22 of Time premiered on January 2, 1989.

Season 23 of Time premiered on January 2, 1990.

Season 24 of Time premiered on January 2, 1991.

Season 25 of Time premiered on January 2, 1992.

Season 26 of Time premiered on January 2, 1993.

Season 27 of Time premiered on January 2, 1994.

Season 28 of Time premiered on January 2, 1995.

Season 29 of Time premiered on January 2, 1996.

Season 30 of Time premiered on January 2, 1997.

Season 31 of Time premiered on January 2, 1998.

Season 32 of Time premiered on January 2, 1999.

Season 33 of Time premiered on January 2, 2000.

Season 34 of Time premiered on January 2, 2001.

Season 35 of Time premiered on January 2, 2002.

Season 36 of Time premiered on January 2, 2003.

Season 37 of Time premiered on January 2, 2004.

Season 38 of Time premiered on January 2, 2005.

Season 39 of Time premiered on January 2, 2006.

Season 40 of Time premiered on January 2, 2007.

Season 41 of Time premiered on January 2, 2008.

Season 42 of Time premiered on January 2, 2009.

Season 43 of Time premiered on January 2, 2010.

Season 44 of Time premiered on January 2, 2011.

Season 45 of Time premiered on January 2, 2012.

Season 46 of Time premiered on January 2, 2013.

Season 47 of Time premiered on January 2, 2014.

Season 48 of Time premiered on January 2, 2015.

Season 49 of Time premiered on January 2, 2016.

Season 50 of Time premiered on January 2, 2017.

Season 51 of Time premiered on January 2, 2018.

Season 52 of Time premiered on January 2, 2019.

Season 53 of Time premiered on January 2, 2020.

Season 54 of Time premiered on January 2, 2021.