The only thing I could find online was that the 1975 tournament ran from December 21, 1974 to January 1, 1975. So a good guess is 1.1.1975 or a day earlier. I hope that helps!
The men's final of the Australian Open tennis in 1975 was on the 13th of January.
Gary hatch
The final match of the 1975 Cricket World Cup was played in Lord's Cricket Ground, London, England on 21 June 1975.
Super Bowl IX played on January 12, 1975 ended with the final score Pittsburgh Steelers 16 and Minnesota Vikings 6.
West Indies vs. Australia
The last Australian Penny was minted in 1964. There was never a 1975 Australian Penny.
Kim Andrew debuted on April 16, 1975 and played his final game on April 21, 1975.
Tommy Bianco debuted on May 28, 1975 and played his final game on September 27, 1975.
Ike Brookens debuted on June 17, 1975 and played his final game on June 25, 1975.
Jake Brown debuted on May 17, 1975 and played his final game on September 28, 1975.
Lafayette Currence debuted on July 24, 1975 and played his final game on September 10, 1975.
Australian Naval Institute was created in 1975.