Oops, it doesn't look like 'museum of australia is open day' is a national day..

Other days

believe

Believe Day
ruby

Ruby Day
law

Law Day
hiv awareness

Hiv Awareness Day
artists

Artists Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
prescription drug take back

Prescription Drug Take Back Day
get funky

Get Funky Day
raise awerness of zeus

Raise Awerness Of Zeus Day
my little pony

My Little Pony Day