In an ad shown in Australia, a lot of people were asked if they knew who the first prime minister of Australia was. No one knew. I don't remember what the campaign was about but they seemed quite proud of the fact that no one can remember the name of their first Prime Minister. Today, go out on the street and ask people you meet if they knew who our first Prime Minister and President were. You may be surprised by what you find.
Similarly you will find people who are enjoying a holiday but don't know what it is for.
There are people:
Happy Republic Day
Happy Australia Day to Aussies and your first prime minister was Edmund Barton.