This is the most common birthday to have

We all love a slice of cake, and now the most popular birthday date has been revealed, you better mark off your calendars.

If you celebrate your birthday in September, you just so happen to be in the company of the majority of the world.

The most common birthday of the year is September 16^th, according to research from Harvard University.

Apart from February 29^th, the least common birthday was January 1^st.

Not surprisingly, birth rates in the summer and autumn were the most popular, with the winter months bringing a higher rate of conception.

In a separate study of nearly 6,500 sperm samples in 2013, researchers found that fertility increased for samples taken in winter and spring – leading to a higher summer birth rate.