I live in Oz. When the Sun God is beating his drum we wear hats.
I was once in a flat-bottomed boat on the Daintree River in Australia's tropical north, spotting crocodiles. There were about 30 other people on it, mostly American tourists, and after a while I pulled out my hat and put it on. One guy said, "Is it time for our hats?" I tried to sound like Crocodile Dundee and said, "Ultra-violet." With one accord 30 hats came out and 30 heads were covered. They'd obviously been told to watch the locals.