The 11th hour of the 11th day of the 11th month... I've been marking this hour on this day my whole life.
On November the 11th 1918 at precisely 11am the Armistice which ended the first world war was signed... today is and always will be Armistice Day. At exactly 11am you will stop whatever you are doing and observe a minutes silence to honour the fallen.
Rememberance Sunday is always on the Sunday immediately after Armistice Day and this is the day you go to your local war memorial and observe another minutes silence at precisely 11am. Sunday is also the day when the Queen and all the politicians lay their Poppy wreathes at the Cenotaph.
Over hear Poppies and observance of both Armistice & Rememberance Sunday are gravely serious things which you don't disrespect... as far as I am aware every single commonweath country is represented on both days.
For us it's a very important day because we've lost so many people.... to give you an idea, the battle of the Somme killed or wounded 60,000 men... on the first DAY.