It's dead quiet in Auckland this morning, and that is because it is ANZAC Day (Australia New Zealand Army Corps).
Anzac Day is a national day of remembrance in Australia and New Zealand and is commemorated by both countries on April 25th to honor the members of the Australian and New Zealand Army Corps (ANZAC) who fought at Gallipoli in Turkey during World War I. It now more broadly commemorates all those who died and served in military operations for their countries. The holiday also represents Australia and New Zealand as allies.
The red poppy is worn on this day, because after the battle, poppies grew over the field where the battle took place.