What are festivals of Australia?

Different parts of Australia have different festivals, holidays or special days for a wide variety of reasons.

Apart from Christmas and Easter, nationally observed days are -

New Years Day - 1st of January
Australia Day - 26th of January - which commemorates the landing of the First Fleet in 1788.
ANZAC Day - 25th of April - which commemorates the 1915 Gallipoli landings.
Remembrance Day - 11th of November - which is a day of remembrance for all who fell during various wars.

Many cities and towns have an Agricultural Show which is when the farming or rural communities bring the fruits of their labours to town for showing, demonstration and competition.

Melbourne has a "Moomba" parade. Moomba is an Aboriginal word meaning "Let's get together and have fun".