The day comes from an online petition filed around 2014 by Where the Winds Blow, a mah jongg retailer in Katy, Texas, and addressed to Congress and President Obama. Its owner, Faye Scher, chose April 30 so American players would have their new annual card and time to learn it.
The oil man who renamed the game
Joseph P. Babcock was a Standard Oil representative in Shanghai, credited with bringing the game west after World War I. The spelling that stuck was his, and Britannica records that the name mah-jongg was coined and copyrighted by him.
He wrote a modified set of rules, gave the tiles English titles, and added index letters and numerals Western card players already knew. His red book of rules ran to a second, enlarged edition.


