It is not possible to pin down a specific date. Like most Martial Arts, it evolved over many years and is several centuries old.
Karate House was created in 2007.
Karate Kiba was created in 1973.
International Karate was created in 1985.
Mr Karate was created in 1993.
Karate Champ was created in 1984.
Karate Canada was created in 1964.
Karate Cop was created in 1991.
Karate Kat was created in 1987.
Karate for Life was created in 1977.
No, there is no season for karate. Karate-ka practice all year long.
International Okinawan Gōjū-ryū Karate-dō Federation was created in 1979.
Karate High School was created in 2004.