I am trying to find my grandparents' records from 1969 but I can't find anything and I don't know why. Does anyone know where exactly can I search for passenger arrival records in Sydney in May 1969? I only found until 1966 and the site doesn't help me so much with the exact dates
This may be the series you are looking for?
I assume that you are referring to the "Passenger arrivals index, 1898 - 1966". The other day I discovered that it contains way more indexed records from later years as well. After testing, there appear to be indexes for records until 1972 (inclusive).
P.S. according to the help section:
The index includes the names of over 9 million passengers from two key series within the collection:
It lists passengers arriving: