Anzac Day is observed annually on April 25th. It commemorates the landing of the Australian and New Zealand Army Corps (ANZAC) at Gallipoli, Turkey, during World War I, which occurred on April 25, 1915. This day is marked each year regardless of the weekday it falls on and is a national day of remembrance in Australia, New Zealand, and some other countries. The day honors all Australians and New Zealanders who have served and sacrificed in wars, conflicts, and peacekeeping operations.