It's the time when maternity wards brace themselves for the busiest time of year.
If previous years are anything to go by then next week will see the day with the highest number of births of the year.
National baby day is the day on which more babies are born, on average than any other day of the year - with nearly 2,000 children born on September 26 every year.
Read more: Most popular baby names for 2022 as Gary makes comeback
Retailer thortful.com analysed live birth data from the UK government, which revealed that the most popular days for a baby to be born are September 26 (1,974 births on average), 25 (1,965) and 24 (1,958).
A spokesman said: "If your birthday is coming up in September it’s safe to say that your parents had a very merry Christmas. Fear not, though, as you share the same experience of being born in September with thousands of other people around the world."
To celebrate the days when most babies are conceived, thortful.com has created birthday cards for those who were conceived over the Christmas holidays.
Andy Pearce, Co-founder and CEO at the company, said: “At thortful we celebrate all birthdays, and it’s great to hear the news that thousands of more birthdays will be created by pending parents this upcoming Christmas.”
According to the Office for National Statistics, eight of the top 10 birth dates in the UK are at the end of September and the other two are in October. This may be because parents are planning to have children at the start of the school year - as well as people celebrating over the festive season.
The least common days to be born are December 25 and 26. January 2 is thought to be the most popular time to conceive.
Of course naming all those newcomers is a challenge of its own and earlier we reported how one boy's name that was thought to be heading for extinction seems to be making a comeback.
Among its list of names said to be trending for 2022, UK Baby Names included the name Gary.
It doesn't appear in the top 100, but the fact that Gary even gets a mention signals fresh hope that it may not vanish from usage after all.
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