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WrestleMania X happened on 1994-03-20.
WrestleMania X-Seven happened on 2001-04-01.
Most likely, Wrestlemania 30 will be held in Madison Square Garden considering every 10 years it's held there. For Example: Wrestlemania, Wrestlemania X, and Wrestlemania XX.
WrestleMania X - 1994 TV was released on:
USA: 20 March 1994
WrestleMania X-Seven - 2001 TV was released on:
USA: 1 April 2001