Before humans had a way of keeping time, no one paid much attention to the anniversary of important events, such as birthdays. Only when ancient peoples began taking notice of the moon's cycles, did they pay attention to the changing seasons and the pattern that repeated itself over and over. Eventually, the first calendars were formulated in order to mark time changes and other special days. From this tracking system came the ability to celebrate birthdays and other significant anniversaries the same day each year.

Evidence of birthday observances dates back before the rise of Christianity. In pagan cultures, people feared evil spirits - especially on their birthdays. It was a common belief that evil spirits were more dangerous to a person when he or she experienced a change in their daily life, such as turning a year older. As a result, birthdays were merry occasions celebrated with family and friends, who surrounded the person of honor with laughter and joy in order to protect them from evil. Instead of gifts, most guests brought positive thoughts and happy wishes for the upcoming year. However, if well-wishers did bring gifts, it was considered an especially good influence for the birthday person.