International Firefighters' Day
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International Firefighters' Day (IFFD) is observed on May 4. It was instituted after proposal emailed out across the world on January 4, 1999 due to the deaths of five firefighters in tragic circumstances in a wildfire in Australia.
May 4 used to be a traditional Firefighters' Day in many European countries, because it's the day of Saint Florian, patron saint of firefighters.