A birthday is a special day in one’s life. This is the date when the person was born. People around the world celebrate birthdays in different ways. In many countries, people celebrate with a cake. Candles are lit on the cake. The number of candles depends on how old the person is. Invited guests sing songs for the birthday person. They often bring a birthday gift for the birthday person. The most important thing is to enjoy the day and spend time with friends and family.