Anzac day is observed on 25 April in Australia and New Zealand in the honor of the martyrs who laid down their lives in World War 1. ANZAC stands for Australian and New Zealand Army Corps. It is in the honor of these corps who fought valiantly at Gallipoli in the Ottoman Empire.
Anzac Day celebrates the unwavering spirit of these soldiers who fought for the sake of their nations whether in conflicts, fights or in peacekeeping operations. Regions apart from Australia and New Zealand where Anzac Day is observed are Cook Islands, Niue, Pitcairn Islands, and Tonga. But the Anzac day, is no longer observed in Papua New Guinea or Samoa, which are places where it was earlier observed traditionally every year.