1) April 25, down under 2) April observance 3) Armed Forces day 4) Public holiday in New Zealand 
in Australia and New Zealand, holiday (April 25) that commemorates the landing in 1915, during World War I, of the Australian and New Zealand Army ...
April 25, a national day of remembrance in Australia and New Zealand commemorating the Anzac landing on Gallipoli, Turkey, in 1915, the first major engagement of Australian and New Zealand forces in World War I.