Father’s Day in New Zealand 5th September
There is no definitive explanation why Father’s Day is celebrated in New Zealand on the first Sunday in September, though it is clear that the custom of the September date began in the mid 1930s.
An article in the Western Herald in 1964 said the day was officially designated as the first Sunday in September across the Commonwealth in 1964 and that the date was chosen for commercial reasons to distance it from other celebrations