On January 30, 1968, the Jamaican House of Representatives voted to decimalize the currency by introducing the dollar, worth 10 shillings, to replace the Jamaican pound. Coins and banknotes went into circulation on September 8, 1969. The introduction of a decimal currency provided the opportunity for the introduction of a complete Jamaican coinage as formerly, the coins (with the exception of the penny and halfpenny), were the same as those used in the United Kingdom. The reverse of the decimal coinage was designed by Christopher Ironside, O.B.E.. These coins were in circulation from 1969 to about 1990.

When did jamaica start using dollars and cents? Let's have some stream of consciousness first.
The relevant sentence in the passage is: Coins and banknotes went into circulation on September 8, 1969. So, the answer is September 8 , 1969.