Many important and popular historical events occurred in 1975. It was the year Haldeman, Ehrlichman, Mitchell and Mardian were convicted of the Watergate crimes. Sweden adopted their new constitution. The Haicheng earthquake in China occurred that year as well. Margaret Thatcher became the British Prime Minister in 1975.

Google it, there are many Earthquake sites!

The Haitian earthquake rates as along with the Sumatran earthquake and tsunami as the most terrible earthquake since 1975. Tangshan, Kashmir, and Sichuan round out the top five.

Sanford and Son - 1972 Earthquake II 5-1 was released on:

USA: 12 September 1975

This is not a record of a Magnitude 8 or Greater Earthquake during the year