INTRODUCTION

A holiday, for many people means time off work. Generally holidays are intended to allow individuals to celebrate or commemorate something of cultural or religious significance. Holidays may be designated by governments, religious institutions, or other groups or organizations. 
So, we have to know how to say the date a holiday is celebrated; then, we have to learn the days of the week, the months of the year and the cardinal numbers (in English we use cardinal numbers to express dates) in order to communicate ideas about birthdays and holidays.