May 4 is International Fire Fighters Day – this is similar to our National Law Enforcement Memorial Day
The date chosen for International Firefighters’ Day was linked to the feast day of St Florian (the patron saint of all firefighters). St Florian was the first known commander of one firefighting squad in the Roman Empire. He lost his life, as well as those of his colleagues, for protecting the same humane ideas which firefighters all over the world share even today.
Firefighters in most of the European countries celebrate their day on 4th of May as a ‘Day of Fire Service’ as well as St. Florian’s Day. This date is also known as St Florian’s Day worldwide and has been tradition for more than 150 years in Europe.
Original source can be found here.