The world’s first parking meter, known as Park-O-Meter No. 1, was installed in the business district of Oklahoma City, Oklahoma, on 16 July 1935. Nation’s first Tornado Warning was issued in Oklahoma on March 25, 1948. Oklahoma is a Choctaw Indian word that means “red people.” It is derived from the words for people (okla) and red (humma). Countryaah.com: Offers a full list of nationwide and statewide holidays in Oklahoma starting from January 1st – New Year’s Day. Also covers the most recent three years of public holidays within the state of Oklahoma.