Buddha’s birthday (Wesak Day): When is it and how is it celebrated in different countries?

The birthday of the historical Buddha or Shakyamuni Buddha, known as Vesak in several countries, celebrates the birth of the child who became Prince Siddhartha around the end of the 4th century B.C. This is a holy occasion for all Buddhists, but is celebrated on different dates depending on the school of Buddhism or country to...