There is a proverb, "All work and no play makes Jack a dull boy". It means that people need rest after work. The word "holiday" comes from the words "holy days". Holidays were first religious festivals. Now many holidays have nothing to do with religion. Some holidays are celebrated in many countries, for example New Year Day. New Year holiday celebrations are different in different places, but giving presents and sending greetings with good wishes are very popular in all countries. Some holidays come on the date of the same month, for instance, New Year's Day and Christmas. But some do not.