2. May day is a public holiday usually celebrated on May 1
May day is a public holiday usually celebrated on May 1. It is a holiday celebrated in over 80 countries in the world. May day is celebrated in memory of workers in Chicago. They went on strike and protested for better working hours and working conditions.

3. In Serbia it was celebrated for the first time in 1893 in Belgrade
In Serbia it was celebrated for the first time in 1893 in Belgrade. It is customary /usual to go out in the nature that day with family and colleagues. May day is real spring festival. In Serbia, people usually do not work for a few days and everybody is happy.