May 1st is Labor Day, celebrated in many countries around the world. It is dedicated to workers and their rights. This day is often marked by parades, demonstrations, and events highlighting the struggle for better working conditions, fair wages, and union rights.

There are a few countries that do not observe it on this date:
United States: Labor Day is celebrated on the first Monday in September.
Canada: The first Monday in September is also Labor Day.
Japan: Although Japan has a day to celebrate workers, it does not have an official holiday corresponding to May 1st.
Australia: Labor Day is celebrated on different dates depending on the state, often in March or October.
New Zealand: Labor Day is observed on the fourth Monday in October.